This versatile interface converter not only works as a RS232 to RS422 converter but it also converts RS232 to RS485. This interface converter is self-powered and features a DB25 (female) RS232 port and 4-pin terminal block for connecting RS422/RS485 devices. This product features a one year manufacturer's warranty. Optional external power supply part number ADS0051 Inventory Closeout Item This is a closeout product. Once our inventory is depleted, it will no longer be available. This sale price is only being offered for a limited time!