 The high-end model features the 1.2 GHz Intel Pentium M 753 Ultra Low Voltage processor (1.20 GHz, 2MB L2 cache, 400 MHz FSB), 60 GB hard drive, 512 MB (333 MHz) of installed RAM (2 GB max), 54g Wi-Fi connectivity (802.11b/g), Bluetooth wireless connectivity, Secure Digital memory card slot, and the Windows XP Tablet PC Edition operating system.The TC1100 allows for easy access to its memory, hard drive, and wireless card through screw-on covers on the rear of the screen unit.The installed memory is either 256MB or 512MB and can be upgraded to 2GB.