USB won't connect on some device

[lightingghost]

I tried to connect this keyboard to a PC, but the usb connection does not work under both bios and OS. (USB light not on, keys does not work.)

However, when I connected the keyboard to a mac, usb connects without a problem.

I would like to learn how to debug this problem.

my keyboard is Omega64 and I updated to the latest firmware according to the instructions.

[jim-kirisame]

Are you using the latest usb firmware? If not, try to upgrade it.

And have you try other usb port without usb hub? some hub might not woking

[lightingghost]

Are you using the latest usb firmware? If not, try to upgrade it.

And have you try other usb port without usb hub? some hub might not woking

Yes I have upgraded to the latest firmware. I am connecting to the PC and mac using the same hub.

[genokolar]

using the latest usb firmware