... DDR2, 533/667MHzSODIMM Socket , up to 4GBOS SupportPOS Ready 2009, POS Ready 7, Windows XP Pro, Vista, Windows 7, LinuxHDD Storage1x ... (External), 2 x USB 2.0 (Internal, 1 reserved for touch screen)1 x PS/2 Mouse, 1 x PS/2 ... Giga LAN2 x RJ-45 Giga LAN1 x RJ-11, 12/24 VDC Selectable1 x Audio Line Out, 1 x MIC ... m2, 20 x 2) Secondary LCD Display8.4”, 10.4”, 12.1", 15" with or without TouchMSR 3 Track, PS/2 ...