The COMM+4.PCI: 4 Port PCI Async RS-232/422/485 Serial Adapter is designed to provide four configurable ports that support RS-232, RS-422, or RS-485 interfaces. With data rates up to 460.8K bps, it is suitable for high-speed communication in legacy systems. In RS-485 mode, the auto-enable feature allows the adapter to function as a standard COM port, streamlining integration. The adapter is compatible with 3.3V and 5V Universal Bus systems and installs in a standard PCI slot. This legacy product is available with limited inventory, and interested users should call for pricing and availability.