Usb 3.0 expansion connector: jusb4, Dled3 connector: jdled3 (optional), Usb 3.0 expanson connector – MSI Z68A-G45 (G3) Manual User Manual

Page 39: Jusb4, Dled3 connector, Jdled3, Chapter 1, Usb 3.0 expanson connector: jusb4, Important, Dled3 connector: jdled3 (optonal)