DETAILS: This high-performance CardBus RS-422/485 Card is an ideal solution for mobile / industrial applications and offers 16C950 compliant UARTs. It supports Auto Transceiver Turn Around (ATTA), bi-directional 128-byte deep FIFO operation, and maximum data transfer rates of up to 921Kbps. Product Description StarTech.com 1 Port RS-422/485 DB9 CardBus Adapter - serial adapter Device Type: Serial adapter Form Factor: Plug-in module Interface (Bus) Type: CardBus Dimensions (WxDxH): 2.4 in x 5.5 in x 0.9 in Weight: 4.2 oz Data Link Protocol: RS-422, RS-485 Data Transfer Rate: 921 Kbps System Requirements: Linux, Microsoft Windows Server 2003, Microsoft Windows 98/ME/NT/2000/XP, Microsoft Windows Vista Manufacturer Warranty: Limited lifetime warranty ALTERNATE ITEM #: CB1S485 UPC: 0065030825283