... backlight, resolution 800*4803. 2 COM ports, support RS232/RS485/RS422, 2 ports can communicate independently4. RTC inside5. USB-B ... , 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. TH765-NU 7.0 inch touch ... , one USB download port, 128MB memory, can extend to 1GB in max. THA62-UT 10.1 inch touch ...