Acer Ipimb-ar Rev 1.02a Manual -

Intel B75 Express, which provides native support for USB 3.0 and SATA III.

If the system fails to post after a hardware change, locate the CMOS battery on the board. Remove it for approximately 30 seconds with the power disconnected to reset settings to factory defaults. Acer Community Finding Official Resources Acer Ipimb-ar Rev 1.02a Manual

He hadn't downloaded it. He hadn't even been connected to the Wi-Fi. Intel B75 Express, which provides native support for USB 3