Quatech QSU2-400-EMB. Host interface: USB, Output interface: Serial, Serial interface type: RS-232/422/485. Width: 165 mm, Depth: 132 mm, Height: 18 mm. Certification: CE, FCC Class B, RoHS & WEEE. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -50 - 80 °C, Operating relative humidity range: 10 - 90 %. Connectivity technology: Wired, Supported data transfer rates: 921.6 kbps, Compatible operating systems: Windows 2000/XP/Vista & Linux