USB ports not working

My SN95G5v2 has been fine up until now.

Installed extra USB card a while back, to allow me to use a Skype handset, but apart from that it's been great. Recently though, both front and rear USB ports have stopped working.

There's no indication of a problem in Device Manager, so apart from a knackered mobo, is there anything else I can try before I RMA the thing ??

yes, mine did this,

check the cable that runs from the ports at the front to your mobo,

youve most likely unplugged it at somepoint

All the front panel lights work, as do the frount audio connections, so I'd assume the lead is in correctly ??