Jusb1~2, Usb 2.0 expanson connectors, Jusb3 – MSI Z77MA-G45 User Manual

Page 35: Usb 3.0 expanson connector, Chapter 1, Jusb1~2: usb 2.0 expanson connectors, Important, Jusb3: usb 3.0 expanson connector, Usb 2.0 bracket (optonal), Usb 3.0 bracket (optonal)