StarTech.com PEX4S232485. Host interface: PCIe, Output interface: Serial, Serial interface type: RS-232/422/485. Data transfer rate: 0.4608 Mbit/s. Width: 125 mm, Depth: 70 mm, Height: 20 mm. Operating temperature range (T-T): 0 - 100 °C, Storage temperature range (T-T): 0 - 150 °C, Operating relative humidity range: 20 - 80 %. Package weight: 0.4 kg