3 PCIe 3.0 slots for SLI or CrossFire. At the centre of the PCB (between CPU and PCIe slot) there is a M.2 SATA SSDs and M.2 PCIe SSDs. There is another in between the 2 left most PCIe slots.
Power On and Reset buttons. There is also a OC for auto OC and ECO for energy saving mode. There are voltage measurement points at the end of the DIMM slots.Near the end of the PCIe slot is an Op Amp which can be replaced using an IC extractor.The back panel consists of (left to right), PS/2 mouse/keyboard ports, 2 USB 3.1 gen 1 ports (yellow), Display port, HDMI port, 2 USB 3.1 Gen 1 ports (blue), Gigabit Ethernet (LAN2), Thunderbolt 3, RJ45 GbE, USB 3.1 Gen 2 Type A port (red), 1 USB 3.1 Gen 1 port (blue), audio ports with SPDIF.2 x U.2 connectors, SATA Express ports, SATA 3 ports
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