Why is Promox not recognizing USB ports as USB 3.0?

reynierpm

New Member
May 19, 2023
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I have a Dell Precision 7910 Workstation with PVE 7.4-3 installed and I have a Home Assistant VM running there. I have connected two USB devices to the back panel but PVE recognizes them as USB 1.x/2.0 but never as USB 3.0. I have checked the MB for this workstation and it says on the manufacturer's website those ports are USB 3.0. What I am missing here?

This is how PVE recognizes the connected devices:

1685014135238.png

Manufcaturer's docs say in this link and this other link those ports are USB 3.0. Connected devices SONOFF Zigbee 3.0 USB say is USB 3.0. The second one tho Nooelec RTL-SDR v5 Bundle does not say a thing about what USB speed it supports.
 
This is a Zigbee 3.0 dongle with USB. I've never seen an USB 3 version and it does not make any sense. It simulates a serial interface, so USB 1.0 speed is enough, same as shown in your screenshot.

Connect a "real" USB 3.x stick or hard disc enclosure to the port and you may see that it will be recognized as USB 3.x

In general: Look inside of the USB connector, if you only see 4 leads it's USB 1.x/2.x. If you see more, it's most probable USB 3.x and above.
Please refer to this explanation.
 
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Also have a look at the options your BIOS offers. Here on the supermicro servers I got a "XHCI" option and when set to "auto" or "disabled" the mainboards USB3 ports will only work in USB2 mode.
 
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on my H11SSL-i, XHCI is set to "enabled" yet inside Proxmox 8.0 all 3 USB 3.0 ports on the mainboard show up as USB 2.0 and also only offer USB 2 speeds.
o_O
*edit* just in case someone else stumbles over this.... in my case it was the USB-A to USB-C cable which limited the extrenal SSD to USB2.
Changed the cable, now its USB3 XD
 
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