StarTech.com 2 Port RS232/422/485 PCI Serial Adapter Card w/ESD Protection Independent configuration allows 1 port to be configured for RS-232 device connections, while the other is configured for RS485 or RS422 Supported on many different operating system platforms including embedded and POS systems Backed by a StarTech.com lifetime warranty and free lifetime technical support Supports RS232, RS422, RS485 2 wire, and RS485 4 wire modes Each port can be set independently Built-in ESD (Electro-Static Discharge) protection Compliant with PCI Rev. 2.2 specifications PCI Power Management Rev. 1.1 compliant