Shuttle XPC SH81R4 Barebone System Mini PC - Intel H81 Express Chipset - Socket H3 LGA-1150 - 16 GB DDR3 SDRAM DDR3-1600/PC3-12800 Maximum RAM Support - Serial ATA/300, Serial ATA/600 - Intel Integrated - 3 x Total Bays - 1 5.25" Bay(s) - 2 3.5" Bay(s) - 4 x Total Expansion Slots - HDMI - Processor Support (Core i3, Core i5, Core i7, Pentium, Celeron) - Gigabit Ethernet - 2 USB 3.0 Port(s)300 W