... backlight, resolution 800*4803. 2 COM ports, support RS232/RS485/RS422, 2 ports can communicate independently4. RTC inside5. USB ... one USB download port, 128MB memory, can extend to 1GB in max. THA65-UT 10.4 inch touch ... one USB download port, 128MB memory, can extend to 1GB in max. THA62-UT 10.1 inch touch ... dimension: 211.4*157.8, equipped with1 USD interface in the back for data memory;New Function:1600 ...