Pin 1: Power LED (+) | Pin 2: Power LED (-) Pin 3: Power Switch | Pin 4: Power Switch (ground) Pin 5: HDD LED (+) | Pin 6: HDD LED (-) Pin 7: Reset Switch | Pin 8: Reset Switch (ground) Pin 9: No connection | Pin 10: Key (missing pin)
The HP IPMMB-FM ("Formosa") is a Micro-ATX motherboard designed by Pegatron for HP, utilizing the Intel Z75 chipset, LGA 1155 socket, and supporting 2nd/3rd generation Core processors. It features four DDR3 DIMM slots, PCIe 3.0, and 7.1 audio, frequently requiring specialized front-panel mapping for aftermarket case upgrades. More information is available on the HP Support Community site. IPMMB-FM Front IO Configuration - HP Support Community ipmmb-fm motherboard manual
2x DVI-D/I, 1x HDMI, 2x USB 3.0, 4x USB 2.0, 1x RJ45 LAN, Optical S/PDIF, and 6-port analog audio. Critical Connector Layouts Pin 1: Power LED (+) | Pin 2:
While some documentation suggests a 16GB limit, the chipset technically supports up to 32GB (4x 8GB modules). If your 1600 MHz RAM is stuck at 1333 MHz, it is likely a firmware limitation within the HP BIOS that cannot be easily bypassed. IPMMB-FM Front IO Configuration - HP Support Community