That's a PCChips motherboard. Some of the cheapest crap ever to
be put in the market. PCChips caught so much flack they renamed
the company to ECS.
Here is the bios flash file for that M741LMRT
http://www.amptron.com/bios/M741LMRT...RT-010221S.exe
Check in the bios after for "enable usb".