USB 2.0 extender over CATx (up to 330 ft)


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The AdderLink C-USB extender set (CUSBEXT100) provides a quick and easy way to place your USB devices up to 100 meters (330 feet) from a host system. Comprising two compact modules plus an auto-sensing mains power adapter, the AdderLink C-USB extender set is physically unobtrusive and totally transparent in operation. Complete support is provided for USB 2.0 (high-speed, low-speed, full speed) devices including isochronous communication.

  • Transparent USB2.0 operation
  • 330ft (100m) extension distance
  • Switchable and routable
  • USB2.0 Hi-speed for mass storage devices plus:
  • USB2.0 (low and full speed) for keyboard, mouse, tablet and touch screen
  • Plug and play
Adder CUSBEXT100-US wiring diagram

Compact, easy to mount

The AdderLink C-USB modules are designed to quickly and easily blend into your existing configuration. Each module measures only 3.42" x 2.25" x 1.12" (87 x 57 x 30mm) and they feature side slots to allow them to be cable-tied to most surfaces.

Complete support for your USB devices

To ensure that AdderLink C-USB provides maximum flexibility, we have worked hard to ensure that it supports every type of USB 2.0 or 1.1 device. So whichever transfer modes your USB devices need to use, you're covered

Plug-and-Play, transparent operation

Once connected, operation is totally transparent to the host system, the USB peripheral(s) and you, the user. There are no drivers to install and your USB devices work precisely as they did before; the only difference is that they are now up to 330 feet (100 meters) away from the host. There is no need for drivers or software to be installed.

Flexible power

The whole C-USB system can be powered from either end. Thanks to a clever piece of electronic design, you can choose to connect the supplied mains power adapter to either the local or remote modules, as is most convenient for your installation. Either way, a full 500mA of current is made available to your USB peripheral. The power adapter is fully auto-sensing so that it can adapt to any mains input from 100 to 240VAC.

Built to last

Adder Technology have a well-earned reputation for creating products that perform well and stay the course. AdderLink C-USB modules are no exception and feature tough, yet lightweight rubberized ABS enclosures to ensure they can easily withstand everyday treatment. The internal components and external connectors too are selected for their reliability in addition to their performance characteristics.

Usable with all operating systems

The AdderLink C-USB modules are entirely independent of any operating system and are thus compatible with them all.

Adder CUSBEXT100-US Specifications

Adder C-USB Quick Start Guide (PDF)
Adder C-USB Brochure (PDF)

Hardware Compatibility

  • All computers with USB 2.0 or 1.1 ports. All USB 2.0 or 1.1 peripherals

Software Compatibility

  • All known operating systems.

USB transmission speeds

  • USB 2.0 Up to 480Mbps.
  • USB 1.1 Up to 12Mbps.
  • Isochronous communication is supported.

Connections - local module

  • 1 x USB Type B socket
  • 1 x RJ45 socket
  • 1 x 2.1mm DC power jack.

Connections - remote module

  • 1 x USB Type A socket
  • 1 x RJ45 socket
  • 1 x 2.1mm DC power jack.

Operating Temperature

  • 0 to 50°C / 32 to 122°F

Operating Humidity

  • 20 to 80% relative humidity, non-condensing.


  • Compact ABS cases with rubberized coating
  • 87mm / 3.42'' (w) x 57mm / 2.25''(d) x 30mm / 1.12''(h).
  • Weight (local) 60g / 2.11 oz.
  • Weight (remote) 72g / 2.54 oz


  • Compact black case
  • 82mm / 3.23'' (w) x 47mm / 1.85''(d) x 31mm / 1.22''(h). Weight 144g / 5 oz.
  • 100-240VAC 50/60Hz, 0.6A, input to power adapter. 24VDC 1A output from power adapter. Either module can accept power input from the adapter.
  • Approvals: CE, FCC, RoHS2.