24-ch Digital I/O USB Module
  • Compatible with USB 1.1/2.0
  • Portable
  • Bus-powered
  • 24 TTL digital I/O lines
  • Emulates mode 0 of 8255 PPI
  • Buffered circuits for higher driving capacity than 8255
  • Interrupt handling capability
  • Timer/Counter interrupt capability
  • Supports both dry and wet contact
  • 50-pin Opto-22 compatible box header
  • Suitable for DIN-rail mounting
  • One lockable USB cable for secure connection included
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The USB-4700 series consists of true plug & play data acquisition devices. No more opening up your computer chassis to install boards-just plug in the module, then get the data. It’s easy and efficient. USB-4751/4751L is a 48/24-bit digital I/O module for the USB bus. Its 48/24 bits are divided into six/three 8-bit I/O ports and users can configure each port as input or output via software. USB-4751/USB-4751L also provides one event counter and three 16-bit timers, which can be cascaded to become a 32-bit timer.


Part Number USB-4751L-AE
General Power Consumption Typical: 5V @ 200 mA; Max.: 5V @ 500 mA
I/O Connectors 50-pin box headers, pin assignments are fully compatible with Opto-22 I/O module racks
Bus USB 1.1/2.0
Dimensions 132 x 80 x 32 mm (5.2″ x 3.15″ x 1.26″)
Operating Temperature 0~60 (32~140°F)
OS Support 32-bit/64-bit Windows 7/8/10, and Linux
Programming Language C#,C++,LabVIEW,VB.Net,BCB,MFC,VB6,Delphi,Java,Matlab,Qt
Timer/Counter Resolution 32 bits
Max. Input Frequency 20MHz
Channels 2
TTL DI/DO Input Channels 24 (shared)
Output Channels 24 (shared)