RS232 interface card:

Half-duplex (not isolated) 300 baud to 38,400 baud

RS485 interface card:

Transmission delay 2 msec./min. or 50 msec./min. adjustable.
2-wire/half-duplex (non-isolated), 300 baud to 38400 baud, up to 32 devices in the loop. Address 0 to 99.

USB interface card:

Virtual COM port Baud rate: 300 baud to 38.4 kbaud. Connection type B, address: 0 to 99

Customs tariff number:

CUB5COM1 & CUB5COM2: 9030 90 00
CUB5USB0: 9029 90 00