Dell E6540 Southbridge Rev C1 or C2

Hi Everyone

My laptop is Dell E6540

I use CPU-Z to see that my southbridge version is still C1.

I bought this recently so I think Intel already solve this USB issue and the version here should be C2.

Is there anyone can confirm the southbridge version?

by the way, what is the issue of C1 version USB3?

USB device disappear in device manager or enumerate fail after S3 wakeup?

Thanks