Lenovo ThinkPad L412 055335U Core i5 520M / 2.4 GHz - RAM 2 GB - HDD 320 GB - DVD-Writer HD Graphics 3G Mobile Broadband - Gigabit Ethernet - WLAN 802.11 a/b/g/n, Bluetooth Windows 7 Pro Intel Core i5 520M / 2.4 GHz ( 2.93 GHz ) 2 GB (installed) / 8 GB (max) - DDR3 SDRAM - 1066 MHz - PC3-10600 ( 1 x 2 GB ) 320 GB Hard Drive - Serial ATA-300 - 7200 rpm Microsoft Windows 7 Professional