This PCI card can run at an amazing speed of up to 18,000,000 baud. It provides 2 industry standard RS422/485 serial ports for PC compatibles in a single PCI slot. The card has on-board zener diodes giving transient spike protection to the inputs – making it ideal for factory automation installations. Includes drivers for all Windows 32 bit and 64 bit Operating Systems, including Windows 7, 8, & 10.  PLEASE NOTE: This product contains several obsolete components and is not recommended for new designs.  Minimum order quantity 5 pcs.