Gigabyte GB-BXA8-5557 Ultra Compact PC kit - (AMD Richland Processor A8-5557M 2.1G/3.1G, Radeo HD 8550G Graphics, 2 x SO-DIMM DDR3L slots) AMD Bolton M3 Chipset Audio: Realtek ALC269, Support OS: WIN7 32/64bit,WIN8 32/64bit, WIN8.1 32/64bit Memory: 2 x SO-DIMM DDR3L slots (DDR3 1.35V), 1333/1600 MHz, Maxmum memory supported upto 16GB 2 x USB 3.0 1 x head phone jack Expandable upto: 1 x mSATA slot, 1 x Half-size mini-PCIe slot occupied by the WiFi IEEE 802.11 a/b/g/n/ac + Bluetooth 4.0 combo half mini card, 1 X SATA slot