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Modem Tested

Agere Systems D 1156I A1A Hp 56k V92 Modem Used Tested in Working Conditio
Agere Systems D 1156I A1A Hp 56k V92 Modem Used  Tested in Working Conditio $3.99
Time Remaining: 3h 3m
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Efficient Networks Speedstream 5100 5100b DSL ADSL Modem Tested Guaranteed
Efficient Networks Speedstream 5100 5100b DSL ADSL Modem Tested  Guaranteed $18.00
Time Remaining: 4h 12m
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Acer Aspire 5610 56K Dial Up Modem W Cable T60M84502 LF TESTED
Acer Aspire 5610 56K Dial Up Modem W Cable T60M84502 LF TESTED $3.29
Time Remaining: 4h 12m
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Motorola SB5101U Used Cable Modem Tested Works Great
Motorola SB5101U Used Cable Modem Tested Works Great $5.50 (8 Bids)
Time Remaining: 6h 11m

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Motorola SURFboard SB5101 515290 087 00 Modem USED TESTED
Motorola SURFboard SB5101 515290 087 00 Modem USED TESTED $39.99
Time Remaining: 8h 6m
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Acer Aspire 5535 56K Dial Up Modem W Cable T60M95136 LF TESTED
Acer Aspire 5535 56K Dial Up Modem W Cable T60M95136 LF TESTED $3.81
Time Remaining: 8h 33m
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MicroStar MS 6946 Ver 10B PCI Internal Modem Used Tested in Working Conditi
MicroStar MS 6946 Ver 10B PCI Internal Modem Used  Tested in Working Conditi $2.99
Time Remaining: 8h 43m
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Digi PortServer TS 3 + M MEI Modem Series w Power Supply Tested Working
Digi PortServer TS 3 + M MEI Modem Series w Power Supply Tested Working $38.97
Time Remaining: 8h 54m
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Cisco DPC3010 Cable Modem Docsis 30 DPC 3010 Tested
Cisco DPC3010 Cable Modem Docsis 30 DPC 3010 Tested $51.99
Time Remaining: 9h 9m
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SONY VGN SZ440 VGN SZ LAN NETWORK BOARD+MODEM+RIBBON CABLE IFX 435 TESTED
SONY VGN SZ440 VGN SZ LAN NETWORK BOARD+MODEM+RIBBON CABLE IFX 435 TESTED $5.39
Time Remaining: 9h 56m
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LOT 10 Tested Motorola SB4100 Cable Modem 4100 Sb 4100
LOT 10 Tested Motorola SB4100 Cable Modem 4100 Sb 4100 $73.00
Time Remaining: 10h 34m
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3Com 3C886 OfficeConnect 56K LAN Modem w AC Adapter TESTED
3Com 3C886 OfficeConnect 56K LAN Modem w AC Adapter TESTED $30.00
Time Remaining: 10h 39m
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Dell Inspiron B130 56K Dial Up Modem k8735 TESTED
Dell Inspiron B130 56K Dial Up Modem k8735 TESTED $2.45
Time Remaining: 11h 3m
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Toshiba Satellite U205 S5034 U205 Modem G86C0001H410 TESTED
Toshiba Satellite U205 S5034 U205 Modem G86C0001H410 TESTED $4.49
Time Remaining: 11h 47m
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Toshiba Tecra M3 S331 M3 Modem Card G86C0000F110 TESTED
Toshiba Tecra M3 S331 M3 Modem Card G86C0000F110 TESTED $4.29
Time Remaining: 11h 47m
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Sony Viao PCG FX300 991l Modem Card Cover TESTED
Sony Viao PCG FX300 991l Modem Card Cover TESTED $9.95
Time Remaining: 11h 50m
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Toshiba Satellite A215 Modem pk01000r00 TESTED
Toshiba Satellite A215 Modem pk01000r00 TESTED $6.95
Time Remaining: 11h 53m
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Sony Viao PCG FX300 991l Modem Card t62m15900 TESTED
Sony Viao PCG FX300 991l Modem Card t62m15900 TESTED $3.92
Time Remaining: 11h 57m
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Gateway MA7 MX6216 56K Dial Up Modem 32ma6md0008 TESTED
Gateway MA7 MX6216 56K Dial Up Modem 32ma6md0008 TESTED $1.85
Time Remaining: 11h 57m
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HP Pavilion DV4000 56K Dial Up Modem 384623 001 TESTED
HP Pavilion DV4000 56K Dial Up Modem 384623 001 TESTED $2.80
Time Remaining: 11h 57m
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Motorola Codex 3520 8CH Nest Card 48377 Qty Lot of 2 for Modem Warranty Tested
Motorola Codex 3520 8CH Nest Card 48377 Qty Lot of 2 for Modem Warranty Tested $99.99
Time Remaining: 13h 40m
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GENUINE BLACKBOX CATALOG TLSI 4 TLSI4 BLACK BOX MODEM UNIT TESTED w WARRANTY
GENUINE BLACKBOX CATALOG TLSI 4 TLSI4 BLACK BOX MODEM UNIT TESTED w WARRANTY $98.99
Time Remaining: 15h 16m
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COMPAQ nx7400 MODEM JACK AND CABLE 399441 001 TESTED WORKING
COMPAQ nx7400 MODEM JACK AND CABLE 399441 001 TESTED WORKING $3.49
Time Remaining: 18h 26m
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Gateway 400VTX 56K Dial Up Modem E188325 TESTED
Gateway 400VTX 56K Dial Up Modem E188325 TESTED $2.90
Time Remaining: 1d 2h 55m
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Dell Latitude D410 56K Dial Up Modem m5804 W Cable TESTED
Dell Latitude D410 56K Dial Up Modem m5804 W Cable TESTED $2.35
Time Remaining: 1d 3h 22m
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Dell Inspiron 1521 56K Dial Up Modem yw011 TESTED
Dell Inspiron 1521 56K Dial Up Modem yw011 TESTED $2.45
Time Remaining: 1d 3h 31m
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FUJITSU LIFEBOOK B2131 MODEMETHERNET CARD PORTS TESTED WORKING
FUJITSU LIFEBOOK B2131 MODEMETHERNET CARD PORTS TESTED WORKING $9.99
Time Remaining: 1d 10h 21m
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Dell Dimension 3000 PCI Modem C3776 Tested
Dell Dimension 3000 PCI Modem C3776 Tested $9.99
Time Remaining: 1d 11h 19m
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Gateway M500B1 Modem Board 5409016011 TESTED
Gateway M500B1 Modem Board 5409016011 TESTED $4.95
Time Remaining: 1d 11h 41m
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US ROBOTICS 0584 ISA V90 56K W JUMPERS MODEM TESTED
US ROBOTICS 0584 ISA V90 56K W JUMPERS MODEM TESTED $35.00
Time Remaining: 1d 13h 32m
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MOTOROLA SB5101N Surfboard Cable Internet Modem TESTED FAST
MOTOROLA SB5101N Surfboard Cable Internet Modem TESTED FAST $15.00
Time Remaining: 1d 14h 13m

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SpeedStream 5667 USB Ethernet ADSL Modem T Base USB Power Cords Tested NR
SpeedStream 5667 USB Ethernet ADSL Modem T Base USB Power Cords Tested NR $10.00
Time Remaining: 1d 14h 33m
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Sony PCG GRV550 Modem Jack CNX 193 1 686 747 11 TESTED
Sony PCG GRV550 Modem Jack CNX 193 1 686 747 11 TESTED $4.61
Time Remaining: 1d 18h 51m
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Cisco WIC 2AM 2 Port Analog Modem Interface Card Fully Tested 1Yr warranty
Cisco WIC 2AM 2 Port Analog Modem Interface Card Fully Tested 1Yr warranty $12.00
Time Remaining: 2d 3h 33m
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Cisco AS5800 144 Modem Card DS58144DMCC DS58 144DM CC Tested Bad
Cisco AS5800 144 Modem Card DS58144DMCC DS58 144DM CC Tested Bad $90.00
Time Remaining: 2d 4h 21m
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Motorola SB5101 Surfboard Cable Modem No Power Cord Included Works Tested
Motorola SB5101 Surfboard Cable Modem No Power Cord Included Works Tested $9.99
Time Remaining: 2d 6h 24m

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AMBIT DSL CABLE MODEM 60194E 004 POWER TESTED GOOD REUSE REFURB OR PARTS
AMBIT DSL CABLE MODEM  60194E 004 POWER TESTED GOOD REUSE REFURB OR PARTS $4.99
Time Remaining: 2d 8h 32m
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Tested Siemens MC35 Terminal Wireless GPRS GSM MODEM With Antenna
Tested Siemens MC35 Terminal Wireless GPRS GSM MODEM With Antenna $75.00
Time Remaining: 2d 9h 2m

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HP Compaq nx9010 Modem Jack + Firewire Port Board DAKT9TB26C3 TESTED
HP Compaq nx9010 Modem Jack + Firewire Port Board DAKT9TB26C3 TESTED $4.95
Time Remaining: 2d 10h 52m
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Acer TravelMate 4060 56K Dial Up Modem t60m845 TESTED
Acer TravelMate 4060 56K Dial Up Modem t60m845 TESTED $4.95
Time Remaining: 2d 11h 1m
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CodeXML M3 Bluetooth Modem Tested Working W USB Cable New
CodeXML M3 Bluetooth Modem Tested Working W USB Cable New $99.99
Time Remaining: 2d 11h 40m
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Alienware D9T D900T Laptop Modem Board 88 D90T1 532 Tested
Alienware D9T D900T Laptop Modem Board 88 D90T1 532 Tested $8.94
Time Remaining: 2d 13h 5m
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TESTED HP DV2000 MODEM CARD 463971 001
TESTED HP DV2000  MODEM CARD  463971 001 $3.99
Time Remaining: 2d 14h 40m
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AMBIT UBEE USB CABLE MODEM U10C018 POWER SUPPLY CAT 5 ETHERNET TESTED WORKS NR
AMBIT UBEE USB CABLE MODEM U10C018  POWER SUPPLY CAT 5 ETHERNET TESTED WORKS NR $9.99
Time Remaining: 2d 14h 55m

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IBM ThinkPad R50e Modem Board w Cable 39T0061 TESTED
IBM ThinkPad R50e Modem Board w Cable 39T0061 TESTED $6.95
Time Remaining: 2d 15h 43m
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IBM ThinkPad R52 Modem Board w Cable 39T0061 TESTED
IBM ThinkPad R52 Modem Board w Cable 39T0061 TESTED $3.95
Time Remaining: 2d 16h 3m
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TESTED Motorola SURFboard SB5101Cable Modem + Setup Equipment
 TESTED  Motorola SURFboard SB5101Cable Modem + Setup Equipment $3.99 (1 Bid)
Time Remaining: 2d 17h 56m

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TESTED Motorola SB5101U 567005005000 38 Mbps Cable Modem + Setup Equipment
 TESTED  Motorola SB5101U 567005005000 38 Mbps Cable Modem + Setup Equipment $6.99 (1 Bid)
Time Remaining: 2d 18h 10m

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Creative 56k V90 PCI fax modem tested working used pull
Creative 56k V90 PCI fax modem tested working used pull $2.99
Time Remaining: 2d 18h 41m

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Toshiba M35 Modem LAN Ethernet Jack Cable RJ11 RJ45 OEM Genuine Part TESTED
Toshiba M35 Modem LAN Ethernet Jack  Cable RJ11 RJ45 OEM Genuine Part TESTED $4.24
Time Remaining: 2d 20h 17m
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linksys wireless B router with power supply tested ver 4 befw1154 make offer
linksys wireless B router with power supply tested ver 4 befw1154 make offer $21.16
Time Remaining: 3d 2h 42m
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westell adsl2+ router rev n w cord excellent tested
westell adsl2+ router rev n w cord excellent tested $17.48
Time Remaining: 3d 3h 21m
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Motorola SBV5121 SURFboard Digital Voice Modem unit only no power supply tested
Motorola SBV5121 SURFboard Digital Voice Modem unit only no power supply tested $32.20
Time Remaining: 3d 3h 31m
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motorola cable modem sb5100 no power supply Tested
motorola cable modem sb5100 no power supply Tested $22.07
Time Remaining: 3d 5h 10m
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M8440 AIRPORT BASE STATION CABLE MODEM TESTED W CABLE
M8440 AIRPORT BASE STATION CABLE MODEM TESTED W CABLE $26.99
Time Remaining: 3d 5h 25m
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att 2wire 2701HG B wireless dsl modem only NO power cord tested
att 2wire 2701HG B wireless dsl modem only NO power cord tested $23.99
Time Remaining: 3d 7h 3m
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APPLE MAC POWERBOOK A1104 15GHZ MODEM U01M210 TESTED WORKING
APPLE MAC POWERBOOK A1104 15GHZ MODEM U01M210 TESTED WORKING $3.88
Time Remaining: 3d 8h 17m
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OEM ASUS MP83 8200 MODEM BOARD 47 0045 0AAD TESTED
OEM ASUS MP83 8200 MODEM BOARD 47 0045 0AAD TESTED $4.99
Time Remaining: 3d 11h 22m
Buy It Now for only: $4.99
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MOTOROLA SURFBOARD CABLE MODEM SB5101 GREAT TESTED
MOTOROLA SURFBOARD CABLE MODEM SB5101 GREAT TESTED $50.00
Time Remaining: 3d 11h 25m
Buy It Now for only: $50.00
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Vintage Global Village Modem Apple Computer Mac OS TESTED
Vintage Global Village Modem Apple Computer Mac OS TESTED $6.00
Time Remaining: 3d 11h 26m
Buy It Now for only: $6.00
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MOTOROLA dsl modem 2210 02 1002 w power supply tested nice item
MOTOROLA dsl modem 2210 02 1002 w power supply tested nice item $21.00
Time Remaining: 3d 12h 1m
Buy It Now for only: $21.00
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US Robotics 661749 81 V90 Modem TESTED
US Robotics 661749 81 V90 Modem TESTED $20.00
Time Remaining: 3d 12h 45m
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Dell Inspiron 5160 Laptop Modem ASUS Y0231 Tested
Dell Inspiron 5160 Laptop Modem ASUS Y0231 Tested $4.49
Time Remaining: 3d 14h 3m
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Lot of 2 Dell Inspiron 5160 Laptop Modem BCM94154M Tested
Lot of 2 Dell Inspiron 5160 Laptop Modem BCM94154M Tested $6.00
Time Remaining: 3d 14h 5m
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IBM THINKPAD T60 T61 T61P R60 X60 MODEM CARD 39T0495 Tested 30 Days Warranty
IBM THINKPAD T60 T61 T61P R60 X60 MODEM CARD 39T0495 Tested 30 Days Warranty $4.99
Time Remaining: 3d 17h
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DELL INSPIRON 1501 E1505 PCI MODEM CARD XH648 TESTED A
DELL INSPIRON 1501 E1505 PCI MODEM CARD XH648 TESTED A $11.45
Time Remaining: 3d 23h 40m
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Dell Inspiron 1525 56K Dial Up Modem dn249 TESTED
Dell Inspiron 1525 56K Dial Up Modem dn249 TESTED $2.20
Time Remaining: 4d 2h 59m
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HP G61 Modem Jack w Cable Tested
HP G61 Modem Jack w Cable Tested $3.99
Time Remaining: 4d 5h
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HP G61 Modem Card 510100 001 Tested
HP G61 Modem Card 510100 001 Tested $3.49
Time Remaining: 4d 5h
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Gateway MT3705 W340UI 56K Dialup Modem 83 500075 000G TESTED
Gateway MT3705 W340UI 56K Dialup Modem 83 500075 000G TESTED $3.49
Time Remaining: 4d 5h
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Dell Latitude D410 Modem Board M5804 TESTED
Dell Latitude D410 Modem Board M5804 TESTED $4.89
Time Remaining: 4d 6h 26m
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HARRIS 102 902510 501 TRUEPOINT 5000 MODEM TESTED
HARRIS 102 902510 501 TRUEPOINT 5000 MODEM TESTED $775.00
Time Remaining: 4d 6h 55m
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HARRIS 102 902510 502 TRUEPOINT 5000 MODEM WB TESTED
HARRIS 102 902510 502 TRUEPOINT 5000 MODEM WB TESTED $995.00
Time Remaining: 4d 7h
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Dell Dimension 3000 PCI Modem X2749 Tested
Dell Dimension 3000 PCI Modem X2749 Tested $9.99
Time Remaining: 4d 7h 32m
Buy It Now for only: $9.99
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MOTOROLA SB5400 SURFBOARD CABLE MODEM NO AC ADAPTER TESTED WORKS
MOTOROLA SB5400 SURFBOARD CABLE MODEM NO AC ADAPTER TESTED WORKS $15.83
Time Remaining: 4d 9h 3m
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Dell Dimension 2400 PCI Modem 5W416 Tested
Dell Dimension 2400 PCI Modem 5W416 Tested $9.99
Time Remaining: 4d 9h 49m
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Dell XPS M1210 56K Dial Up Modem W Cable H9379 TESTED
Dell XPS M1210 56K Dial Up Modem W Cable H9379 TESTED $3.50
Time Remaining: 4d 10h 3m
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Viking 56K USB External Modem Tested and working USB powered
Viking 56K USB External Modem Tested and working USB powered $24.95
Time Remaining: 4d 10h 21m
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Gateway SA1 M 1625 USB Modem Board w Cable 32SA1RB0000 TESTED
Gateway SA1 M 1625 USB Modem Board w Cable 32SA1RB0000 TESTED $1.94
Time Remaining: 4d 10h 37m
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HP Compaq TC4200 56K Dial Up Modem 397795 001 TESTED
HP Compaq TC4200 56K Dial Up Modem 397795 001 TESTED $2.95
Time Remaining: 4d 11h 14m
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US Robotics 0325 23364 MM E Internal ISA Modem TESTED
US Robotics 0325 23364 MM E Internal ISA Modem TESTED $20.00
Time Remaining: 4d 11h 24m
Buy It Now for only: $20.00
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US Robotics 0411 ISA 8 Bit Modem TESTED
US Robotics 0411 ISA 8 Bit Modem TESTED $15.00
Time Remaining: 4d 11h 24m
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Alienware D9T D900T Modem Board 88 D90T1 394 MDCAZS TESTED
Alienware D9T D900T Modem Board 88 D90T1 394 MDCAZS TESTED $8.95
Time Remaining: 4d 13h 26m
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HP Compaq 6730b Laptop Genuine Audio Modem Board 486250 001 TESTED
HP Compaq 6730b Laptop Genuine Audio Modem Board 486250 001 TESTED $3.68
Time Remaining: 4d 13h 56m
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adtran T1 CSU ACE 3rd Generation tested working best buy ebay C3M
adtran T1 CSU ACE 3rd Generation tested working best buy ebay C3M $199.98
Time Remaining: 4d 14h 23m
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Genuine Apple iMac 800MHz 17 Logic Board 820 1383 A 256MB RAM+Modem Tested
Genuine Apple iMac 800MHz 17 Logic Board 820 1383 A 256MB RAM+Modem Tested $99.99
Time Remaining: 4d 15h 9m
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Toshiba A130 A135 Modem Card PK010000000 TESTED
Toshiba A130 A135 Modem Card PK010000000 TESTED $5.95
Time Remaining: 4d 15h 27m
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ATT 2WIRE DSL MODEM 2701HG B WIRELESS ROUTER COMBO TESTED
ATT 2WIRE DSL MODEM 2701HG B WIRELESS ROUTER COMBO TESTED $35.00
Time Remaining: 4d 16h 38m
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Acer Aspire 4720Z 56K Dial Up Modem W Cable T60M95141 LF TESTED
Acer Aspire 4720Z 56K Dial Up Modem W Cable T60M95141 LF TESTED $2.99
Time Remaining: 5d 8h 57m
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Motorola Modem SURFER 56k model 3456 TESTED AND WORKING ISA Interface
Motorola Modem SURFER 56k model 3456 TESTED AND WORKING ISA Interface $2.95
Time Remaining: 5d 9h 42m
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Dell Inspiron 1520 56K Dial Up Modem dn249 TESTED
Dell Inspiron 1520 56K Dial Up Modem dn249 TESTED $5.00
Time Remaining: 5d 9h 58m
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Tested Cisco DPC3010 Cable Modem DOCSIS 30 TESTED UPDATED
Tested Cisco DPC3010 Cable Modem DOCSIS 30 TESTED UPDATED $79.99
Time Remaining: 5d 10h 53m
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3 x SB5100 MODEM SIGMA X2 AND 106 BETA TESTED AND WORKING CHECK IT OUT
3 x SB5100 MODEM SIGMA X2 AND 106 BETA TESTED AND WORKING  CHECK IT OUT $49.99
Time Remaining: 5d 12h 53m
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Acer Aspire 5520 ICW50 Series 56K Dial Up Modem Board T60M95500 LF TESTED
Acer Aspire 5520 ICW50 Series 56K Dial Up Modem Board T60M95500 LF TESTED $4.95
Time Remaining: 5d 13h 43m
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Apple Powerbook G4 A1106 Alum 15 Modem Card A034920 w Cable 632 0291 A TESTED
Apple Powerbook G4 A1106 Alum 15 Modem Card A034920 w Cable 632 0291 A TESTED $11.00
Time Remaining: 5d 13h 44m
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Dell Latitude LS Series Modem Board 3534T TESTED
Dell Latitude LS Series Modem Board 3534T TESTED $5.95
Time Remaining: 5d 13h 57m
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DELL MODEM V92 DATA FAX INTERNAL P N 1K636 01K636 Tested 30 Days warranty
DELL MODEM V92 DATA FAX INTERNAL P N 1K636 01K636 Tested 30 Days warranty $9.99
Time Remaining: 5d 18h 12m
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Dell Inspiron 1100 56K Dial Up Modem 9x163 TESTED
Dell Inspiron 1100 56K Dial Up Modem 9x163 TESTED $2.47
Time Remaining: 5d 22h 26m
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TOSHIBA SATELLITE A210 12U WIFI WIRELESS WLAN CARD + MODEM PORT CARD TESTED
TOSHIBA SATELLITE A210 12U WIFI WIRELESS WLAN CARD + MODEM PORT  CARD TESTED $12.53
Time Remaining: 6d 5h 26m
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HP Pavilion DV6 1000 56K Dial Up Modem W Cable 510100 001 TESTED
HP Pavilion DV6 1000 56K Dial Up Modem W Cable 510100 001 TESTED $2.99
Time Remaining: 6d 6h 8m
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is a download speed is 5722 kbps good for cable modem?

I am on a wireless notebook with cable modem and ran internet speed test. My results for download speed was 5,722 kbps and upload speed 2,253 kbps. Is this considered to be good because my signal is always low?

That's respectable. Depends on what service you are paying for. If you are paying for 8 or 10mbps package, it's probably ok. If you are paying for a 20mbps, then maybe something else is wrong.
By the way, speed tests over wireless are always slower than wired, try the tests wired into the router instead, to get a better idea of what your potential speed may be...

Website Performance And Load Testing

Your company is rolling out its new web application. This web application is well designed and attractive. It has been well tested by your quality assurance group. You have spent a lot of money marketing your new website. The website now goes live. Very soon you realize that your new web application is unable to scale to your typical production load and the response times and performance reach completely unacceptable levels. Your web logs indicate that most of your website visitors simply leave the new website before buying anything since its response times are very poor. You start to panic, and one of your friends tells you that the reason your application does not perform adequately is that you do not have ample hardware. Hearing this, you decide to add more server hardware. While this has a small effect on the website response time, it is still woefully inadequate. You soon realize that problem does not really lie with the hardware but rather with the web application itself. It appears that your web application was not well optimized for the typical peak loads. It becomes increasingly evident that most of your marketing dollars were wasted.

Enter the world of performance and load testing. In order to ensure that your application scales as the load increases, it is necessary to perform tests where your application is tested against a simulated load that closely resembles the actual load that it will be subjected to when it is exposed to the outside world.

It is important to distinguish between functional or regression testing and load or performance testing. Functional and regression testing is used to automate a large number of scenarios to ensure that your website works as intended. Load testing on the other hand gauges how well your website performs when it is subjected to a large load, such as a large number of simultaneous users.

Load and performance testing require the use of automated testing tools. It is impractical if not ridiculous to try to simulate a load of 200 concurrent users by having a group of 200 folks sit on 200 machines and try to perform operations at the same time. Before you can begin any kind of load and performance testing you will need to identify the test scenarios you need to automate. A load testing tool will typically record web requests and responses based on user interactions with a website. As you perform various operations on your website or application, the tool records all the web transactions that take place. When you finish recording, it generates an automated script. Alternatively you could use the tool to manually create the script. Typically testers will perform a combination of the two. They will use the recording mechanism to generate the skeletal foundations of their scripts and then manually modify the scripts to take into account specialized scenarios. The load testing tool should also allow the tester to simulate constrained bandwidth situations. This means for example that it would accurately model users who would use the application on a slow modem connection. It should also allow the tester to drive the script using random data from large external data sets.

Load testing scripts can be either graphical or textual in nature. Good load and performance testing tools do not require the testers to be programmers. Testers that are not familiar with programming will work with scripts that can be graphically manipulated. Graphical scripts will typically show all recorded steps in the form of a hierarchical structure and testers would modify any of the steps in order to modify the recorded script. Testers who are proficient in programming may want to manipulate their scripts by editing the code. These testers would work with code written in a well known programming language such as JavaScript, VBScript or C.

Once your script has been created, you may wish to put specialized checks in place. These checks would typically be related specifically to the application under test. For example you may wish to check that the response returned by a certain web request meets certain textual criteria. This would involve the placement of a text checkpoint. A text checkpoint can verify that a given text segment is present or is not present in a specified portion of the web page. Once you have finished the creation of the script you would typically test the script on your own machine as a single user to ensure that the test script runs as intended.

You are now ready to perform a performance based load test. A good load testing tool will allow the tester to fine tune the execution of the test. This means that it will allow the tester to choose the number of concurrent virtual users, how the script ramps up, how it ramps down and for how long it runs. It should also allow the tester to create various groups of concurrent virtual users that have their own ramp up, steady state and ramp down characteristics. A good testing tool will allow the user to distribute this load over several machines since a single machine may be only able to scale up to a few hundred users.

To understand the behavior of the loaded web application, it is also important for the load testing tool to enable the tester to track the performance characteristics of external components such as operating systems, web servers, databases etc. This allows the user to see how the performance of his application correlates with the performance characteristics of the external component. This kind of analysis will allow the tester to pinpoint the root cause of performance bottlenecks fairly easily.

During test execution the tester should be able to view the performance graphs in real time for performance metrics such as the transaction response time, HTTP responses per second grouped by HTTP code (e.g. 200, 404, 500 etc), passed transactions per second, failed transactions per second, total transactions per second, hits per second, pages downloaded per second etc. The tester should also be able to simultaneously view the performance characteristics of the external components described above. For an operating system this could be something like the % processor time, for a database it could be the number of writes per second. At the end of the test, the tester would typically be able to view and save this data as a report for further analysis.

Load and performance testing allow you to simulate the behavior of your application under a typical production environment. This will allow you to plan your hardware deployment strategy effectively and ensure that your application will deliver the expected performance characteristics. Rolling out a web application without testing its performance characteristics under expected production loads would resemble crossing a road blindfolded. Load testing is an essential part of the development cycle of a web application and should never be overlooked.

About the Author

Umair Khan is Founder and Chairman of
Verisium, Inc.
, a maker of
vPerformer
, an application for performance and load testing of web applications.

Huawei E182E / E1820 with DOVADO 3GN

Modem Tested

Written by admin

April 27th, 2009 at 11:01 pm