Toshiba Satellite Laptop (U405D S2874) AMD Turion X2 Dual-Core RM-72 2.1 GHZ 4GB PC6400 DDR2 800MHz SDRAM ATI Radeon 3100 256MB-1.5GB dynamic VRAM Atheros WIFI (802.11b/g/n) 6 USB ports (2 USB 3.0 ports and 4 USB 2 ports)