Intel® Atom® Processor C3558, Single Socket FCBGA1310 supported, CPU TDP support 16W System on Chip Up to 256GB Registered ECC DDR4-2133MHz, Up to 64GB Unbuffered ECC/Non-ECC DDR4-2133MHz; in 4 DIMM slots Expansion slots: 1 PCI-E 3.0 up to x2 (Slot 6 or 7 option)* Flexible I/O - software configurable in BIOS M. 2 Interfaces: 1 B-Key 3042/2280 supports PCI-E 3.0 x2/SATA/USB 8x 1GbE RJ45 LAN ports 2x 1GbE SFP LAN ports Up to 3 SATA3 (6 Gbps) ports via SoC* Flexible I/O - software configurable in BIOS I/O: 1 VGA, 1 COM (1 via header), TPM header 3 USB 3.0 (2 rear, Type-A) 2 USB 2.0 (2 via headers) Intel Quick Assist Technology Supports 12V DC power input