Gateway TM 5150 - Manual (Page 28)

26 Using Your Gateway Solo™ 5150 Multimedia Notebook
Using an external mouse or keyboard
You can attach an external mouse or keyboard to the notebook using the PS/2
port, the USB port, or the serial port. The optional docking stations also have
ports for external connections.
It is not necessary to shut down the system to connect an external PS/2
mouse or keyboard.
If the touchpad driver does not support the external mouse, then refer to the
mouse documentation and follow the installation instructions.