ASRock INC released the Z77 Extreme4-M motherboard user manual, which supports Intel fourth-generation Haswell processors, uses LGA1150 socket, supports DDR3 1600 memory, supports up to 32GB of memory, and has three PCIe 3.0 x16 slots, supporting dual SLI and CrossFireX dual graphics card crossfire technology, with two M.2 interfaces, support SATA 3.0 interface, support USB 3.0 interface, support Realtek ALC1150 audio chip, support 7.1 channel audio output, support DisplayPort, HDMI, DVI-D and VGA interfaces