How do I install my touchpad on IBM Thinkpad (serial and PS/2 installation)?
IBM ThinkPads typically ship with the serial port disabled, in order to enable the infrared port. To enable serial, refer to the ThinkPad’s manual. Most IBM ThinkPads have only one external PS/2 port. To enable an external keyboard and/or touchpad, you must acquire a proprietary PS/2 splitter provided by IBM directly. Note: Cirque does not support port replicators or adapters. Optimal configuration on these systems is serial or USB port connection.