R5C with USB 5G modem - device disconnects
Posted: Thu Jun 25, 2026 11:53 am
Hi,
I experience usb 5G modem disconnects. Looks like usb port power issue, but I would like to confirm if there is any solution.
When doing speed test, it reaches ~ 200mbit/s for 3-5 seconds and then modem is restarted. System logs usb device disconnect.
When doing the same test plugged directly into Macbook M2 or Lenovo X1 - all works good. Speed test runs at maximum speed of 200 mbit/s and the device does not restart.
Does that mean that R5C is not capable to provide enough power to USB3 port?
Any hints?
Thanks
I experience usb 5G modem disconnects. Looks like usb port power issue, but I would like to confirm if there is any solution.
- USB3 modem: 05c6:9063 Tri Cascade Inc. VOS_5G
R5C with FirendlyWRT 23.05.2 (r23630-842932a63d) kernel 6.1.25
Power supply: original Lenovo type-c 65W
When doing speed test, it reaches ~ 200mbit/s for 3-5 seconds and then modem is restarted. System logs usb device disconnect.
When doing the same test plugged directly into Macbook M2 or Lenovo X1 - all works good. Speed test runs at maximum speed of 200 mbit/s and the device does not restart.
Does that mean that R5C is not capable to provide enough power to USB3 port?
Any hints?
Thanks