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Serial (RS-232) Dial-Up Modems

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    • NOS Vtg 3COM US Robotics 56K v90 Fax Modem for MAC OS model: 5689 New - Image 1 of 4
    • NOS Vtg 3COM US Robotics 56K v90 Fax Modem for MAC OS model: 5689 New - Image 2 of 4
    • NOS Vtg 3COM US Robotics 56K v90 Fax Modem for MAC OS model: 5689 New - Image 3 of 4
    • NOS Vtg 3COM US Robotics 56K v90 Fax Modem for MAC OS model: 5689 New - Image 4 of 4

    NOS Vtg 3COM US Robotics 56K v90 Fax Modem for MAC OS model: 5689 New

    Brand New · USRobotics
    S$ 84.18
    S$ 116.95 shipping
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    • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 1 of 4
    • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 2 of 4
    • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 3 of 4
    • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 4 of 4

    New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU

    Brand New · Genius
    S$ 73.86
    S$ 62.50 shipping
    Only 1 left!
    3⁣⁣C⁣⁣⁣ ⁣⁣L⁣X⁣⁣⁣⁣ ⁣O⁣⁣N⁣⁣ ⁣6⁣S⁣⁣⁣ ⁣L⁣H⁣⁣ ⁣W⁣
    • Dial UP Internet modem external GVC SF1156V/RF Serial port (RS-232), TAIWAN - Image 1 of 4
    • Dial UP Internet modem external GVC SF1156V/RF Serial port (RS-232), TAIWAN - Image 2 of 4
    • Dial UP Internet modem external GVC SF1156V/RF Serial port (RS-232), TAIWAN - Image 3 of 4
    • Dial UP Internet modem external GVC SF1156V/RF Serial port (RS-232), TAIWAN - Image 4 of 4

    Dial UP Internet modem external GVC SF1156V/RF Serial port (RS-232), TAIWAN

    Brand New · GVC
    S$ 51.55
    S$ 25.04 shipping
    I⁣9⁣ ⁣⁣⁣⁣F⁣2⁣⁣ ⁣0⁣⁣⁣D⁣⁣ ⁣⁣4⁣⁣P⁣⁣ ⁣U⁣7⁣ ⁣⁣⁣⁣
    • Dial Up internet modem external GVC SF-1156V/K4D, Serial (RS-232), TAIWAN - Image 1 of 4
    • Dial Up internet modem external GVC SF-1156V/K4D, Serial (RS-232), TAIWAN - Image 2 of 4
    • Dial Up internet modem external GVC SF-1156V/K4D, Serial (RS-232), TAIWAN - Image 3 of 4
    • Dial Up internet modem external GVC SF-1156V/K4D, Serial (RS-232), TAIWAN - Image 4 of 4

    Dial Up internet modem external GVC SF-1156V/K4D, Serial (RS-232), TAIWAN

    Brand New · GVC
    S$ 51.55
    S$ 25.04 shipping
    Z⁣J⁣ ⁣M⁣⁣V⁣ ⁣K⁣X⁣⁣⁣ ⁣⁣⁣5⁣⁣⁣⁣H⁣⁣⁣ ⁣⁣X⁣⁣⁣⁣I⁣
  • Zoom/FaxModem 2949 56Kx Dual Mode for PC V.80 Vintage New Factory Sealed Lots 2 - Image 1 of 4

    Zoom/FaxModem 2949 56Kx Dual Mode for PC V.80 Vintage New Factory Sealed Lots 2

    Brand New · Zoom
    S$ 70.14
    S$ 87.52 shipping
    ⁣⁣9⁣⁣R⁣ ⁣⁣0⁣G⁣ ⁣⁣E⁣Q⁣⁣ ⁣D⁣2⁣ ⁣⁣0⁣O⁣⁣⁣ ⁣⁣⁣⁣D⁣
  • GE Security 420173001 External Industrial Dial-Up Modem with 1A Power Supply - Image 1 of 4

    GE Security 420173001 External Industrial Dial-Up Modem with 1A Power Supply

    Brand New · GE
    S$ 84.16
    S$ 81.76 shipping
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  • HAYES 5150AM ACCURA 14400 + FAX144 EXTERNAL MODEM. New, orig box, docs software - Image 1 of 4

    HAYES 5150AM ACCURA 14400 + FAX144 EXTERNAL MODEM. New, orig box, docs software

    Brand New · Hayes
    S$ 96.80
    S$ 92.28 shipping
    X⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣3⁣⁣⁣⁣⁣ ⁣Z⁣V⁣⁣ ⁣⁣F⁣S⁣ ⁣Q⁣⁣6⁣
  • ECONOLITE Industrial 56K RJ11C RJ11W 24 V Input RS-232 Traffic Cabinet Component - Image 1 of 4

    ECONOLITE Industrial 56K RJ11C RJ11W 24 V Input RS-232 Traffic Cabinet Component

    Pre-Owned · MultiTech
    S$ 32.25
    S$ 60.71 shipping
    S⁣U⁣O⁣ ⁣D⁣p⁣о⁣n⁣s⁣Q⁣ ⁣8⁣K⁣ ⁣o⁣r⁣e⁣d⁣Y⁣⁣K⁣ ⁣6⁣⁣G⁣⁣⁣ ⁣
  • Acorp M56SCD 56k v.92 External Dial-up Modem - Image 1 of 4

    Acorp M56SCD 56k v.92 External Dial-up Modem

    Pre-Owned
    S$ 28.04
    S$ 54.60 shipping
    S⁣Y⁣1⁣p⁣ ⁣H⁣L⁣ ⁣1⁣o⁣n⁣ѕ⁣X⁣ ⁣o⁣r⁣e⁣d⁣⁣⁣⁣6⁣C⁣ ⁣⁣I⁣X⁣⁣
  • MultiTech Multi-Tech MultiZDX (MT2834ZDXB) 33.6 Kbps - Image 1 of 2

    MultiTech Multi-Tech MultiZDX (MT2834ZDXB) 33.6 Kbps

    Pre-Owned · MultiTech
    S$ 25.25
    or Best Offer
    S$ 40.19 shipping
    P⁣S⁣p⁣o⁣n⁣T⁣ѕ⁣o⁣r⁣e⁣d⁣ ⁣R⁣P⁣ ⁣⁣D⁣⁣⁣⁣⁣V⁣⁣ ⁣D⁣⁣⁣⁣
  • 5362US HAYES OPTIMA 56K External MODEM Version 7.0 Rare - Image 1 of 4

    5362US HAYES OPTIMA 56K External MODEM Version 7.0 Rare

    Pre-Owned · Hayes
    S$ 56.10
    S$ 48.16 shipping
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  • US ROBOTICS Courier Dual Standard V.34 Fax V.32 bis Modem 1.020.091-B - Used - Image 1 of 3

    US ROBOTICS Courier Dual Standard V.34 Fax V.32 bis Modem 1.020.091-B - Used

    Pre-Owned · USRobotics
    S$ 23.67
    or Best Offer
    S$ 47.35 shipping
    Only 1 left!
    6⁣⁣⁣5⁣⁣ ⁣Q⁣D⁣⁣ ⁣6⁣⁣⁣⁣U⁣ ⁣⁣V⁣1⁣ ⁣5⁣O⁣⁣ ⁣G⁣⁣⁣ ⁣
  • Vintage Hayes Accura 15328 External Modem White - UNTESTED - Image 1 of 4

    Vintage Hayes Accura 15328 External Modem White - UNTESTED

    Parts Only · Hayes
    S$ 20.83
    S$ 47.29 shipping
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  • Signalman Modem Anchor Automation Mark II Atari Vintage Gaming - Image 1 of 4

    Signalman Modem Anchor Automation Mark II Atari Vintage Gaming

    Pre-Owned
    S$ 16.82
    or Best Offer
    S$ 75.78 shipping
    ⁣⁣⁣⁣T⁣J⁣ ⁣⁣D⁣⁣⁣L⁣ ⁣⁣G⁣⁣E⁣ ⁣⁣⁣9⁣⁣6⁣⁣ ⁣⁣S⁣G⁣
  • SWANN SMART V.90 56K SERIAL DIAL-UP MODEM DATA FAX RS232 PORT INTERFACE Vintage - Image 1 of 4

    SWANN SMART V.90 56K SERIAL DIAL-UP MODEM DATA FAX RS232 PORT INTERFACE Vintage

    Pre-Owned · Swann
    S$ 117.54
    S$ 60.57 shipping
    ⁣H⁣P⁣⁣ ⁣Y⁣H⁣ ⁣⁣7⁣0⁣ ⁣⁣⁣⁣D⁣⁣⁣B⁣ ⁣Q⁣P⁣⁣⁣⁣⁣ ⁣⁣
  • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 1 of 4

    New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU

    Brand New · Genius
    S$ 80.25
    S$ 62.78 shipping
    N⁣⁣L⁣⁣⁣⁣ ⁣E⁣1⁣⁣ ⁣O⁣S⁣⁣ ⁣⁣⁣⁣T⁣⁣C⁣⁣⁣⁣ ⁣V⁣P⁣ ⁣
  • ZyXEL Omni 56K Mini EE Dial-Up Modem Full Package - Image 1 of 4

    ZyXEL Omni 56K Mini EE Dial-Up Modem Full Package

    Pre-Owned · ZyXEL
    S$ 21.03
    or Best Offer
    S$ 46.29 shipping
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  • Practical Peripherals 14400FXSA External Modem V32Bis-w/o Box or Power Supply - Image 1 of 4

    Practical Peripherals 14400FXSA External Modem V32Bis-w/o Box or Power Supply

    Pre-Owned · PPC
    S$ 35.04
    S$ 65.92 shipping
    R⁣S⁣C⁣р⁣ ⁣D⁣o⁣n⁣s⁣Q⁣ ⁣D⁣o⁣I⁣r⁣e⁣d⁣⁣ ⁣L⁣⁣⁣L⁣⁣ ⁣4⁣B⁣ ⁣
  • OPEN BOX: 3COM US Robotics 56K v90 Fax Modem for MAC model: 5689 - Image 1 of 4

    OPEN BOX: 3COM US Robotics 56K v90 Fax Modem for MAC model: 5689

    New (Other) · USRobotics
    S$ 46.22
    S$ 87.80 shipping
    S⁣Y⁣J⁣p⁣ ⁣I⁣K⁣ ⁣о⁣Z⁣n⁣s⁣0⁣o⁣ ⁣r⁣7⁣e⁣d⁣0⁣⁣⁣ ⁣8⁣⁣9⁣⁣⁣
  • US Robotics Fax Modem Sportster with X2 56K - 0459 - Image 1 of 3

    US Robotics Fax Modem Sportster with X2 56K - 0459

    Pre-Owned · USRobotics
    S$ 21.03
    or Best Offer
    S$ 38.37 shipping
    Q⁣E⁣⁣ ⁣C⁣L⁣ ⁣P⁣⁣⁣⁣⁣⁣⁣X⁣⁣ ⁣0⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
  • MultiTech MT2834ZDX Modem Multi - TESTED - Image 1 of 2

    MultiTech MT2834ZDX Modem Multi - TESTED

    Pre-Owned · MultiTech
    S$ 25.60
    or Best Offer
    S$ 29.88 shipping
    ⁣⁣R⁣⁣3⁣⁣⁣⁣⁣⁣⁣⁣⁣ ⁣⁣U⁣O⁣⁣⁣⁣⁣ ⁣J⁣⁣⁣D⁣⁣⁣
  • MultiTech Systems MT2834ZDXB 33.6 Kbps Data/Fax Modem Lot - Image 1 of 4

    MultiTech Systems MT2834ZDXB 33.6 Kbps Data/Fax Modem Lot

    Pre-Owned · MultiTech
    S$ 70.13
    or Best Offer
    S$ 31.18 shipping
    9⁣⁣⁣⁣⁣0⁣ ⁣⁣⁣D⁣4⁣⁣⁣⁣⁣⁣ ⁣⁣⁣⁣B⁣7⁣⁣ ⁣V⁣H⁣⁣ ⁣
  • Vintage Signalman Mark VII Modem RS-232C w/ D-Sub-25 Connector Anchor Automation - Image 1 of 4

    Vintage Signalman Mark VII Modem RS-232C w/ D-Sub-25 Connector Anchor Automation

    New (Other)
    S$ 119.23
    S$ 105.59 shipping
    H⁣J⁣ ⁣E⁣⁣P⁣ ⁣⁣N⁣O⁣ ⁣P⁣⁣⁣⁣⁣⁣⁣⁣L⁣ ⁣⁣5⁣C⁣ ⁣⁣⁣⁣
  • Cascade RS-232 56 K Baud Low Power Modem for harsh conditions - Used - Image 1 of 4

    Cascade RS-232 56 K Baud Low Power Modem for harsh conditions - Used

    Pre-Owned
    S$ 28.04
    or Best Offer
    S$ 47.33 shipping
    C⁣N⁣ ⁣K⁣⁣⁣1⁣ ⁣⁣H⁣5⁣⁣ ⁣7⁣⁣P⁣⁣⁣ ⁣⁣X⁣F⁣ ⁣C⁣⁣ ⁣⁣⁣
  • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 1 of 4

    New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU

    Brand New · Genius
    S$ 79.16
    S$ 63.50 shipping
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  • PRACTICAL PERIPHERALS 336 MiniTower 4719US External Phone Modem - Image 1 of 3

    PRACTICAL PERIPHERALS 336 MiniTower 4719US External Phone Modem

    Pre-Owned · PPC
    S$ 36.40
    or Best Offer
    S$ 57.40 shipping
    Only 1 left!
    ⁣D⁣B⁣ ⁣⁣U⁣Q⁣⁣⁣ ⁣⁣C⁣E⁣⁣ ⁣⁣⁣⁣U⁣1⁣⁣ ⁣2⁣⁣V⁣⁣⁣⁣
  • New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU - Image 1 of 4

    New! Genius 56k v92/v90 External Modem GM56EX with 240v UK PSU

    Brand New · Genius
    S$ 78.22
    S$ 62.73 shipping
    ⁣⁣⁣⁣H⁣⁣Z⁣ ⁣⁣S⁣P⁣ ⁣⁣4⁣⁣I⁣ ⁣⁣A⁣H⁣ ⁣A⁣⁣0⁣⁣⁣ ⁣⁣
  • US Robotics 839 Sportster External 33.6 V.90 Serial Data Faxmodem 1997 Vintage - Image 1 of 4

    US Robotics 839 Sportster External 33.6 V.90 Serial Data Faxmodem 1997 Vintage

    New (Other) · USRobotics
    S$ 28.04
    or Best Offer
    S$ 48.68 shipping
    W⁣⁣4⁣⁣⁣ ⁣J⁣3⁣ ⁣7⁣⁣O⁣⁣ ⁣⁣⁣M⁣⁣⁣0⁣⁣ ⁣⁣Z⁣N⁣⁣ ⁣⁣
  • US ROBOTICS Sportster 33.6 Faxmodem 3COM 000839-09 - Image 1 of 4

    US ROBOTICS Sportster 33.6 Faxmodem 3COM 000839-09

    Pre-Owned · USRobotics
    S$ 65.65
    Was: S$ 91.18was - S$ 91.18
    or Best Offer
    S$ 31.06 shipping
    G⁣⁣H⁣⁣ ⁣Q⁣A⁣ ⁣D⁣M⁣ ⁣⁣⁣⁣⁣7⁣⁣1⁣ ⁣B⁣⁣P⁣⁣⁣ ⁣⁣D⁣⁣
  • Hayes 2000US V-Series ULTRA 96 Desktop Smartmodem 9600 with Power Supply - Image 1 of 3

    Hayes 2000US V-Series ULTRA 96 Desktop Smartmodem 9600 with Power Supply

    Pre-Owned · Hayes
    S$ 129.06
    Was: S$ 185.17was - S$ 185.17
    or Best Offer
    S$ 87.68 shipping
    K⁣O⁣ ⁣Z⁣9⁣ ⁣⁣⁣⁣⁣J⁣X⁣⁣⁣ ⁣⁣⁣K⁣⁣O⁣⁣ ⁣5⁣⁣8⁣⁣ ⁣⁣
  • US ROBOTICS 3453C COURIER 56K BUSINESS MODEM W/ POWER ADAPTER - Image 1 of 4

    US ROBOTICS 3453C COURIER 56K BUSINESS MODEM W/ POWER ADAPTER

    Pre-Owned · USRobotics
    S$ 49.09
    or Best Offer
    S$ 91.11 shipping
    ⁣⁣⁣L⁣I⁣⁣⁣ ⁣⁣C⁣⁣T⁣ ⁣⁣Y⁣A⁣⁣⁣⁣ ⁣⁣J⁣⁣Q⁣ ⁣H⁣Z⁣⁣
  • Signalman Modem Anchor Automation Mark II Atari Vintage Gaming - Image 1 of 4

    Signalman Modem Anchor Automation Mark II Atari Vintage Gaming

    Pre-Owned
    S$ 17.54
    S$ 77.20 shipping
    ⁣Y⁣E⁣ ⁣⁣⁣⁣W⁣⁣C⁣ ⁣6⁣K⁣ ⁣J⁣⁣1⁣ ⁣6⁣⁣V⁣⁣⁣ ⁣⁣⁣⁣⁣
  • US Robotics 3453 Courier 56Kbps Business Modem - Image 1 of 2

    US Robotics 3453 Courier 56Kbps Business Modem

    Pre-Owned · USRobotics
    S$ 23.50
    S$ 122.96 shipping
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  • US Robotics Sportster 33.6 Fax Modem 000839-09 - Image 1 of 4

    US Robotics Sportster 33.6 Fax Modem 000839-09

    Pre-Owned · USRobotics
    S$ 27.99
    or Best Offer
    S$ 45.31 shipping
    ⁣H⁣T⁣⁣ ⁣⁣F⁣C⁣ ⁣8⁣N⁣⁣ ⁣X⁣⁣⁣X⁣⁣ ⁣⁣9⁣⁣W⁣⁣ ⁣4⁣⁣⁣
  • Ayantra IML 560 Low Power 56 Kbps Industrial Modem - Image 1 of 4

    Ayantra IML 560 Low Power 56 Kbps Industrial Modem

    New (Other)
    S$ 16.82
    S$ 59.99 shipping
    ⁣J⁣A⁣ ⁣M⁣Z⁣⁣ ⁣Z⁣⁣8⁣⁣ ⁣B⁣T⁣ ⁣3⁣3⁣⁣⁣ ⁣⁣⁣M⁣⁣⁣ ⁣⁣
  • USED WORKS GOOD US ROBOTICS V.92 MODEM MODEL 5686 - Image 1 of 2

    USED WORKS GOOD US ROBOTICS V.92 MODEM MODEL 5686

    Pre-Owned · USRobotics
    S$ 26.49
    or Best Offer
    S$ 41.13 shipping
    ⁣⁣A⁣⁣⁣A⁣ ⁣V⁣R⁣⁣ ⁣6⁣S⁣⁣⁣⁣ ⁣⁣⁣⁣2⁣⁣6⁣ ⁣J⁣⁣F⁣ ⁣
  • US Robotics Sportster 33.6K External Fax Modem w/ AC Adapter - Image 1 of 2

    US Robotics Sportster 33.6K External Fax Modem w/ AC Adapter

    Pre-Owned · USRobotics
    S$ 56.10
    or Best Offer
    S$ 48.16 shipping
    Only 1 left!
    ⁣⁣⁣⁣8⁣⁣⁣⁣⁣0⁣ ⁣Y⁣⁣⁣⁣⁣8⁣ ⁣⁣K⁣⁣⁣L⁣ ⁣⁣⁣U⁣7⁣
  • Diamond Supra Express 56k Modem - Image 1 of 4

    Diamond Supra Express 56k Modem

    Pre-Owned · SUPRA
    S$ 21.04
    S$ 66.62 shipping
    8⁣⁣⁣⁣⁣M⁣⁣⁣⁣⁣ ⁣⁣6⁣⁣L⁣⁣ ⁣0⁣⁣⁣⁣⁣⁣D⁣ ⁣A⁣⁣⁣
  • Vintage IBM 7855-10 Dial Up Digital External Modem Black Ethernet Ports (O2D*) - Image 1 of 4

    Vintage IBM 7855-10 Dial Up Digital External Modem Black Ethernet Ports (O2D*)

    Pre-Owned · IBM
    S$ 102.53
    Was: S$ 120.63was - S$ 120.63
    or Best Offer
    S$ 94.58 shipping
    ⁣⁣F⁣4⁣ ⁣B⁣⁣O⁣ ⁣⁣⁣⁣⁣⁣⁣P⁣B⁣⁣ ⁣⁣⁣⁣Y⁣⁣⁣H⁣ ⁣⁣
  • Usrobotics 4x2usa-33236-m5-e v.90 56k standard & x2, external sportster faxmode - Image 1 of 2

    Usrobotics 4x2usa-33236-m5-e v.90 56k standard & x2, external sportster faxmode

    Pre-Owned · USRobotics
    S$ 91.18
    or Best Offer
    S$ 67.91 shipping
    2⁣⁣A⁣ ⁣1⁣H⁣ ⁣⁣D⁣⁣T⁣⁣⁣ ⁣4⁣W⁣ ⁣⁣⁣⁣⁣⁣⁣D⁣F⁣ ⁣H⁣⁣
  • Practical Peripherals 14400FXSA External Modem V32Bis-w/Box, Power Supply-NICE - Image 1 of 4

    Practical Peripherals 14400FXSA External Modem V32Bis-w/Box, Power Supply-NICE

    Pre-Owned · PPC
    S$ 111.52
    S$ 127.29 shipping
    R⁣⁣M⁣ ⁣6⁣⁣Y⁣⁣ ⁣⁣⁣⁣X⁣I⁣⁣⁣⁣⁣ ⁣7⁣⁣⁣⁣⁣Q⁣⁣⁣ ⁣
  • US Robotics 56k External Modem Sportster 5686-83 w Serial Cable Power Supply - Image 1 of 3

    US Robotics 56k External Modem Sportster 5686-83 w Serial Cable Power Supply

    Pre-Owned · USRobotics
    S$ 26.65
    or Best Offer
    S$ 60.45 shipping
    ⁣9⁣⁣B⁣⁣⁣⁣ ⁣J⁣⁣⁣⁣C⁣ ⁣⁣⁣⁣⁣⁣⁣⁣⁣V⁣⁣O⁣⁣⁣⁣
  • U.S.Robotics Sportster 33.6 Faxmodem with Adapter. Product Number: 000839-09 - Image 1 of 3

    U.S.Robotics Sportster 33.6 Faxmodem with Adapter. Product Number: 000839-09

    Pre-Owned · USRobotics
    S$ 23.83
    or Best Offer
    S$ 50.26 shipping
    ⁣⁣⁣⁣⁣⁣⁣⁣H⁣I⁣⁣ ⁣⁣A⁣V⁣⁣ ⁣3⁣2⁣⁣ ⁣⁣H⁣M⁣ ⁣⁣7⁣⁣
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