EXSYS USB to 4S Serial RS-232 port (Prolific Chip-Set). Host interface: Serial. Data transfer rate: 0.115 Mbit/s. Width: 150 mm, Depth: 70 mm, Height: 30 mm. Operating temperature range (T-T): 0 - 55 °C, Operating relative humidity range: 5 - 95 %. Cables included: USB 1.8 m