Dual RS-422 USB Interface, AVID APPROVED, for DAW's including Avid, Pyramix


  • Two RS422 ports, Connections to Standard Sony RS-422 pin-out

  • Port A may be configured as a Controller (O/P) or Device (I/P) using internal links

  • Port B is configured as a Controller (O/P)

  • Windows 98, ME, 2000 and XP Drivers

  • MAC OS-X Driver

  • Linux Driver

  • Optional Tri/Bi Level Video Sync Reference input

  • Parallel I/O port with Video Sync option

  • Tx and Rx LED’s on both ports

  • Slew Rate Limited RS422 drivers to minimise EMI and reduce reflections

  • Sample Windows Program on website

  • Rugged extruded aluminum box

  • WEEE/RoHS Compliant


CB Electronics have for a number of years used USB-RS232 interfaces both with and without RS232-RS422 converters. In designing the USB422 we used the experience with many different manufactures to choose the best combination of hardware and drivers.

A test programme that provides both machine control and a virtual machine is available from our web site. The program locks both the virtual machine (Port-A) and machine control (Port-B) to video syncs.

Buy Online - USB-422 and USB-422V are available Ex-Stock

  • All prices include delivery by courier 1-3 days depending on location, UK sales with VAT, EU Sales with/without VAT, "Rest of World" without VAT

  • If you Select "Europe Excluding VAT" you must email your VAT/TVA Number, Company Name and Address or include it with your order

  • Please include your telephone number for the cour

USB-422 for DAW's including Avid, Pyramix: Destination UK/UK/World
USB-422v for Mosaic/Joker: Destination UK/EU/World


Manuals & Data Sheets


To download please click on text.



Windows Test Software

  • usb422.msi
    Windows Test software comprising of a remote control and a virtual machine,record arming commands. Test panels for USB422V video input and GPIO. Controller now has copy clipboard and locate from clipboard commands. Now will only open and close ports that are visible (used to enable one port at a time).separate open/close button on each port 22 Nov 2013

    Alternative Windows Test software comprising of a remote control and a virtual machine,record arming commands. Not as fast but easier to use 5 Aug 2015

Mac Test Software

    S/W to measure the latency of the serial connection

    Mac Universal binary Test software comprising of a remote control and a virtual machine,record arming commands. 22 March 2009


Low Latency Mac Driver

  • mac latency.pdf
    Updated April 6th 2017, Instuctions on installing and setting the MAC low latency driver including extra procedure required for Mavericks and Yosemite, El capitan, Sierra and High Sierra.

  • MacHighSierra.pdf
    Updated March 28th 2018, Instuctions on disabling SIP on Mac Sierra and High Sierra (Thanks to Jonathan Martins for the concise information, and to Alicja Golianek for testing on High Sierra) OS Mac Sierra

    MacLow2p2p17.kext" Signed 32/64 bit FTDI Driver modified for Low Latency

    MacLow2p3.kext" Signed 64 bit FTDI Driver modified for Low Latency (Yosemite, Mavericks, Sierra, High Sierra)

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