ASRock Z77M Rear USB 3.0 Problem

[Snoopy]

It seems like the USB 3.0 controller is not enabled in the BIOS. Perhaps the the BIOS has a bug in it, although I would think that Asrock would be aware of it by now. Perhaps flashing to one or two versions older may help. You can always flash back if it doesn't.

[RhoXS]

When I received the first new board I immediately flashed it from 1.4 to 1.7 so I never had a chance to see if the 3.0 ports worked with the old bios. When I installed the new replacement board I intentionally waited to flash the bios but the 3.0 ports still did not work with the older 1.4 bios.

[Tweakurr]

[UEFI Setup Only] - USB devices are allowed to use only under UEFI
setup and Windows / Linux OS.

Have you tried UEFI mode?

Have you tried using the 2nd 3.0 header? Looking at the package contents it does not list a rear panel adapter for it, so that may not be an option if you don't have a spare lying around.

[RhoXS]

Originally Posted by Tweakurr

Have you tried UEFI mode?

Have you tried using the 2nd 3.0 header? Looking at the package contents it does not list a rear panel adapter for it, so that may not be an option if you don't have a spare lying around.

Physically there are two rear panel USB 3.0 (blue) ports, the Motherboard Layout and I/O Panel on page 2 and 3 of the manual show them, the specifications on page 7 state "-2 x Ready-to-Use USB 3.0 Ports", and the bios has an option to enable/disable the USB 3.0 ports so I have to assume the Z77M is indeed equipped with them.

My Lian-Li case is three years old and only has front/top panel 2.0 ports so I have not yet been able to try the 3.0 header. However, I just ordered a 2.5" drive bay panel with two 3.0 ports on it. I expect it in a few days and am looking forward to see if the header works. If it does work it will fully serve my needs so I will then give up on the two rear 3.0 ports as they will not be needed.