ASUS ET2011AUTB-B002E, EeeTop PC. Processor clock speed: 1.6 GHz, Processor model: E-350, System bus: 2.5 GT/s. Internal memory: 2 GB, Maximum internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 500 GB, Hard drive rotational speed: 7200 RPM. Optical drive type: DVD Super Multi. Compatible memory cards: MMC, SD, SDHC