GA-H81M-S2PH (rev. 2.1) rev. 2.0rev. 1.0 Intel® H81 Chipset H81MS2PH.FC Supports 4th Generation Intel® Core™ processors GIGABYTE Ultra Durable™ 4 Plus Technology Audio Noise Guard with High Quality Audio Capacitors GIGABYTE UEFI DualBIOS™ GIGABYTE On/Off Charge™ for USB devices LAN with high ESD Protection HDMI, D-SUB, LPT, COM port on rear panel All solid capacitors design