StarTech 4 Port RS232 PCI Express Serial Card w Breakout Cable (PEX4S553B) Bluetooth Device 3 cm (32") Ergonomics Height 3 cm (32") Ergonomics Height adjustment Yes Design Colour of product Black Design Material Plastic RoHS compliance Yes Weight & dimensions Width 330 mm Package height 88 mm Length 43 Also available in a 10 pack (J4859C10PKST) for maximum cost savings Ports & interfaces Serial ports quantity 4 Host interface PCIe Performance Chipset MosChip MCS9901 Operational conditions Storage temperature (T T) 40 85 °C Operating temperature (T T) 0 70 °C Operating relative humidity (H H) 5 85% Weight & dimensions Width 20 mm Height 62 mm Depth 70 mm Weight & dimensions Package height 40 mm Package depth 175 mm Package width 142 mm Weight 226 On chip 256 byte depth FIFO in transmit receive path of each port