ECS X79R-AX Black Series
Expansion slots include four PCI-Express 3.0 x16, that can be electrically configured as x16/NC/x16/NC (single card or 2-way), x16/NC/x8/x8 (3-way), and x8/x8/x8/x8 (4-way). Other slots include two PCI-Express x1. Storage connectivity includes 12 internal SATA ports, and two eSATA. The data-rates of the internal ports are not known, but it most likely has two SATA 6 Gb/s and four SATA 3 Gb/s ports wired to the X79 PCH, while the remaining six ports are driven by additional SATA 6 Gb/s 2-port controllers. The eSATA ports run at 6 Gb/s.
The board is using cost-effective TI-made USB 3.0 controllers, there are four USB 3.0 ports on the rear panel, and two via a standard USB 3.0 internal header. The 8-channel HD audio is driven by a Realtek-made CODEC, which also gives out optical SPDIF through a TOSLINK connector. There are two gigabit Ethernet connections, both driven by Realtek 8111E chips. A few interesting connectivity addons bundled with this board are a Bluetooth dongle, and what appears to be a Wireless N USB adapter.
Overclocker-friendly features include CMOS-reset button on the rear-panel, diagnostic numerical display, diagnostic LEDs spread all over the board, consolidated voltage manual measurement points, and a thermometric strip over the chipset heatsink that gives out a very rough analog temperature reading. The chipset and VRM heatsinks are linked via a 6 mm-thick heat pipe. Power/reset buttons are on board. The X79R-AX most likely uses UEFI firmware.