Tripp Lite Keyspan USB to Serial Adapter 2 Port RS-422 Mac

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USB to Serial More Like This There is good reason why Tripp Lite Keyspan sells more Mac USB serial adapters than any other company. They've been making PCI serial cards and USB serial adapters for Mac OS for more than 10 years! The USB Twin Serial Adapter is recommended by dozens of serial device manufacturers and has been certified by Apple for use with Final Cut Pro.

For use with RS-232 and RS-422 serial devices including modems, graphics tablets, video decks, serial PDAs, serial printers, GPS devices, and medical/scientific instrumentation. Does not support AppleTalk/Local Talk. Some serial devices, including many serial printers, do not have drivers for Mac OS X and therefore will not operate under Mac OS X. Check with the serial device manufacturer to confirm that Mac OS X is supported. (For Epson Stylus Printers, use Tripp Lite Keyspan's USB Parallel Printer Adapter if running Mac OS X.)

Part Number and Description Price Add to Cart
USB-SIO-K01M Keyspan USB to 2 Port Serial Adapter RS-422 Mac N/A SOLD OUT

Features and Specifications


CE Mark

Manufacturer certifies RoHS Compliance

USB Logo

  • Simple and easy to install
  • Provides two RS-422 mini-DIN8 ports for connection to serial devices
  • Has been qualified by Apple, Avid and others for connection to video decks
  • Draws power from the USB connection — a power adapter in not required
  • Auto detect of speeds and connections of devices
  • Supports use of multiple adapters on one Mac
  • Emulates the printer port on one port
  • Supports data rates up to 1 Mbps
Warranty Information
  • Manufacturer's 1 Year Limited Warranty
  • Universal Serial Bus
  • Two female mini-DIN8 serial ports
  • Serial ports support asynchronous or clocked asynchronous RS-422/RS-232 communications at data rates up to 1Mbit/sec.
Incompatible Serial Devices
  • Products which require LocalTalk/AppleTalk
  • Products which require Geoport
System Requirements
  • USB equipped Macintosh with Mac OS 8.6 through 9.x
  • USB equipped Macintosh Mac OS X 10.2.8 through 10.5.x (both 32- and 64-bit), and Mac OS X 10.6 (32-bit and 64-bit)
Package Includes
  • Tripp Lite Keyspan USA-28XG USB Twin Serial Adapter for Mac
  • CD with driver software and user guide


Download Driver Download Page
Tripp Lite Keyspan page for driver downloads

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