The IO Crest RS-232 + RS-422/485 DB9 Serial M.2 B+M Key Controller Card is a versatile interface add-on card that provides two serial ports for RS-232, RS-422, and RS-485 connections. With a maximum data rate of 9.6 KBps, this M.2 B+M Key controller card from IO Crest allows for efficient communication with external devices for various networking and automation applications. The compact form factor and compatibility with different serial interfaces make it a valuable addition to any computer system needing enhanced port expansion capabilities.
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