ASRock B150M-ITX/D3 LGA1151 Mini-ITX Motherboard, Intel B150, 4x USB 3.0, 2x USB 2.0, 2 x USB 2.0 Header (Supports 3 USB 2.0 ports), 1 x USB 3.0 Header (Supports 2 USB 3.0 ports), Intel Gigabit Ethernet, 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec), 2x Dual Channel DDR3/DDR3L DIMM Slots, 1x PCI Express 3.0 x16 Slot (PCIE1 x16 mode), 1 x Vertical Half-size Mini-PCI Express Slot, 5x SATA3 6.0 Gb/s Connectors, 1 x mSATA Connector (shared with Mini-PCI Express Slot). Actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit O