ASRock's first wave of socket LGA2011 motherboards comes a full circle with the X79 Extreme4. The series consists of the X79 Extreme4, X79 Extreme4-M (micro-ATX), X79 Extreme7, and X79 Extreme9. There aren't many micro-ATX LGA2011 motherboards that we're hearing about, and hence ASRock might get the opportunity to charge a premium for the X79 Extreme4-M, making this the most affordable LGA2011 board from ASRock's stable. It still packs a lot of features and connectivity. To begin with, it is consistent with the black and gold styling of the other boards, including the active fan-heatsink over the X79 PCH. The LGA2011 socket is powered by an 8-phase VRM design, which is identical to that of the X79 Extreme4-M. The socket is wired to four DDR3 DIMM slots, supporting quad-channel DDR3 memory (one DIMM per channel). It has an interesting combination of expansion slots, making use of all 7 spaces available to the ATX form-factor. It includes three PCI-Express x16 (first two are permanent PCI-Express 3.0 x16, the third is permanent PCI-Express 2.0 x8), two PCI-Express 2.0 x1, and two legacy PCI. Storage connectivity includes two SATA 6 Gb/s and four SATA 3 Gb/s internal ports wired to the X79 PCH, three additional SATA 6 Gb/s and one eSATA 6 Gb/s wired to ASMedia-made SATA controllers. There are four USB 3.0 ports in all, driven by two ASMedia-made controllers, these include two ports on the rear panel, and two by internal header. 8+2 channel HD audio with optical and coaxial SPDIF outputs, one gigabit Ethernet connection, Firewire, and a number of USB 2.0 ports make for the rest of the connectivity. The board supports 3-way SLI and CrossFire, the XFastLAN feature works to lower pings in online games, and the audio features THX TruStudio software. The board is driven by UEFI firmware.