The AO751h has the larger 11.6" screen with an LED backlit display and a 1366x768 native resolution. It includes a 1GB/667 MHz DDR2 SDRAM memory option (2 GB being the maximum), a 160 GB HDD option, Bluetooth option, Intel northbridge US15W, and an OS option for Windows Vista Home Basic edition or Windows XP Media Center Edition. All AO751h units are powered by an Intel Atom Z520 processor running at 1240 MHz. The US15W system controller incorporates a GMA500 video core. The AO751h has a dual power (AC/DC) option.