Specification: Construction: plastic molding housing Display:7inch 65536 color tft lcd Cpu and core logic:32 bit risc 400mhz processor Dram:64 mb ddr2 on broard Storage:128mb flash memeory on board I/o: 3 serial ports:com1:rs-232/rs-485 2w/4w Com2:rs-232 Com3:rs-232/rs-485 2w 1 usb 1.1 host 1 usd 2/0 high speed device Rtc:built-in Dimension(w*h*d):200*146*42.5mm Dimension(w*h*d):200*146*42.5mm Weight:1-2 kg