Connecting case cables to the front panel header (often labeled ) follows this standard 14-pin layout: Pin Number Pin Number HDD LED (+) Power LED (+) HDD LED (-) Power LED (-) Reset Switch (-) Power Switch (+) Reset Switch (+) Power Switch (-) No Connection Key (Empty) No Connection No Connection Active LED
4 × USB 2.0 ports (and 2 × USB 3.0 ports on variants using the A75 chipset). Ethernet: 1 × RJ-45 LAN port for internet connection. acer aahd3-vc motherboard manual