I-7561U-G CR: High-speed USB to Isolated RS-232/422/485 Converter with CA-USB18 Cable
Tm-SG4: Terminal module for RS-485 network with terminating resistors and Pull-high/Pull-low resistors. It is able to optimize the signal on RS-485 networks while reducing noise

MARCOM will be closed for the summer between 12/08 and 19/08 inclusive. Orders can still be sent and will be handled in order of arrival.