Serial Port

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Most older ThinkPads have a Male DB-9 RS232 Serial Port, capable of running up to 115,200bps

Current ThinkPads no longer have a physical serial port, but still have the logic integrated, all that is required is to attach the ThinkPad to a supported Dock or Port Replicator with a serial port.

ThinkPads produced from 1994 onwards have a NS16550A compatible uart.

Models featuring this Technology

Legacy UART

ThinkPad 220
ThinkPad 550BJ

16550A compatible UART

ThinkPad T20, T21, T22, T23, T30

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