This came out of my working media center PC. It was only replaced due to upgrading.

Intel® Thunderbolt™ 3 Certified Motherboard Support for 7th/6th Generation Intel® Core™ i7 processors/Intel® Core™ i5 processors/ Intel® Core™ i3 processors/Intel® Pentium® processors/ Intel® Celeron® processors in the LGA1151 package Intel® Z170 Express Chipset Dual Channel DDR4, 4 x DIMM sockets supporting up to 64 GB of system memory Support for DDR4 3866(O.C)/3733(O.C)/3666(O.C) /3600(O.C.) /3466(O.C.) /3400(O.C.) /3333(O.C.) /3300(O.C.) /3200(O.C.) /3000(O.C.) /2800(O.C.) /2666(O.C.) /2400(O.C.) /2133 MHz memory modules Support for Extreme Memory Profile (XMP) memory modules Intel® USB 3.1 with USB Type-C™ - The World's Next Universal Connector 3-Way Graphics Support with Exclusive Ultra Durable Metal Shielding over the PCIe Slots Dual PCIe Gen3 x4 M.2 Connectors with up to 32Gb/s Data Transfer (PCIe NVMe & SATA SSD support) 1 x PCI Express x16 slot, running at x16 (PCIEX16)

• For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. 1 x PCI Express x16 slot, running at x8 (PCIEX8)
• The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode. 1 x PCI Express x16 slot, running at x4 (PCIEX4)
• The PCIEX4 slot shares bandwidth with the M2H_32G connector. The PCIEX4 slot will become unavailable when an SSD is installed in the M2H_32G connector. 3 x PCI Express x1 slots (All of the PCI Express slots conform to PCI Express 3.0 standard.) 3 SATA Express Connectors for up to 16Gb/s Data Transfer Integrated HDMI 2.0 support 2 x M.2 Socket 3 connectors (Socket 3, M key, type 2242/2260/2280 SATA & PCIe x4/x2/x1 SSD support) 6 x SATA 6Gb/s connectors (SATA3 0~5) Support for RAID 0, RAID 1, RAID 5, and RAID 10
• Refer to "1-10 Internal Connectors," for the supported configurations with the M.2, SATA Express, and SATA connectors. ASMedia® ASM1061 chip: 2 x SATA 6Gb/s connectors (SATA3 6~7), supporting AHCI mode only Creative SoundCore™ 3D Gaming Audio Killer™ E2400 and Intel® Gaming Networks LED Trace Path with Multi-Color Choice APP Center Including EasyTune™ and Cloud Station™ Utilities GIGABYTE UEFI DualBIOS™ Technology 5 x USB 3.0/2.0 ports on the back panel 4 x USB 2.0/1.1 ports (available through the internal USB headers)