TS-7840 USB Connectors

The TS-7840 has a total of 3 externally facing USB ports, and one internal USB port. All 4 are type A ports. 2 are USB 3.0, and 2 are USB 2.0.

CN11 is an external port with blue connectors which is USB 3.0. CN9 by the RJ11/SFP port is a USB 2.0 port. CN3 internal to the board has one active port on the top which can be use for internal USB peripherals. The lower port on USB 3.0 is not connected.

The internal USB port must be enabled with:

# Select internal USB (CN3)
gpioset 3 24=1

# Enable Modem SW 5V
gpioset 3 19=1

The external ports all have a single controllable rail that can be used to turn off power, or reset a problematic device in the field. This does not affect the modem 5V used for the internal USB.

# Turn off power
gpioset 3 20=0

# Turn on power
gpioset 3 20=1