Documentation

How to Use Your USG

The USG firewall is easy to use - just insert it between your computer and the device you wish to isolate.

Supported Devices

The USG supports the following devices at USB 1 speeds (12Mbps).

 Mass storage Flash drives and hard drives, 512byte sectors and 2TB max
Mice 4 buttons with scroll wheel
Keyboards 101 keys

Additional Security Features

Besides protecting you with an internal firewall, the USG also prevents keyboards and mice from entering malicious commands when you are not at your computer.

If bot detection is activated your input will temporarily lock and you will see a red LED double-flash every second. Repeated bot detection will cause a permanently lock. To reset the lock, simply unplug and re-insert the USG. If the USG locked while you were away from the computer, consider not using that input device!

LED Error Codes

 LED flashing like this: ...means this:

Yellow (downstream)
1 flash per second

The connected USB device is not supported

Yellow (downstream)
5 flashes per second

Internal firmware error, communication shut down
Red (upstream)
5 flashes per second
Internal firmware error, communication shut down
Red (upstream)
Double flash per second
HID bot detect activated, unplug to reset

Tamper Protection

The USG’s case is sealed with tamper-evident glitter epoxy to protect against physical tampering or replacement. Photographing both sides of the case allows you to later verify that your firewall has not been tampered with.

Still Have Questions?

Check out the FAQ!