Carrier-COMe-C79
SECO Carrier-COMe-T7-C79 is a carrier board designed for COM Express® Type 7 modules, built in ATX form factor to support evaluation, bring-up and system integration on high performance COM Express platforms. It provides core storage interfaces including 2x SATA connectors and a microSD card slot, with the microSD interface multiplexed with the GPIO header. 
On the connectivity and expansion stack, it features 1x Gigabit Ethernet RJ-45, 4x 10Gbase-KR interfaces on OCP Type-C connector, 4x USB 3.1 Host ports on dual Type-A sockets, 2x PCIe x4 slots, 1x PCIe x8 slot and 1x PCIe x16 slot. It also includes 2x RS-232 ports from the module on dedicated pin header. 
For system integration, the board includes a rich set of auxiliary interfaces such as BMC connector, SPI Flash socket, front panel header, fan connector, smart battery connector, POST code displays, JTAG connector, buzzer, and ATX plus 12VDC power inputs. It operates in the 0°C to +60°C commercial range and measures 305 x 244 mm.
Technical Documents
At the following Links you will find documentations like Manual and Rev. specific documents.