ITEM NAME:1pc Serial RS232 to RS485 Passive Port Data Communication Converter Adapter #gib Store Home Promotion Hot Item Add to Fav.Work Mode: Asynchronous Half Duplex. 1 X RS232 to RS485 Converter. Converts RS-232 TXD and RXD signal to 2 lines equalized half duplex RS-485 signal. Serial Port Feature: Concurrently compatible with RS-232C, RS-485 standard of EIA/TIA.