ASRock 64GB RAM DIMM LGA 1151 Motherboards B150M PRO4V Supports 6th generation Intel Core i7/ i5/ i3/ Pentium/ Celeron processors Memory: 4x DDR4-2133 DIMM slots, dual-channel, NON-ECC, Unbuffered, max capacity of 64GB Slots: 2x PCI-Express 3.0 x16 slots (one runs at x4), 2x PCI Express 3.0 x1 slots (Flexible PCI-Express) Multi-Graphics: supports AMD Quad CrossFireX, CrossFireX technology Ports: 6x USB 3.0 ports (4 rear, 2 via header), 2x USB 2.0 ports (via header), 1x PSU/2 keyboard/mouse port, 1x VGA port, 1x DVI-D port, 1x HDMI port, 1x RJ45 LAN port, audio I/O jacks