Dell Precision Guide De Configuration Et De Référence Rapide page 10

NOTE: Do not attempt to
operate a PS/2 mouse and
a USB mouse
simultaneously.
10
Setup and Quick Re ference Guide
1
Keyboard and Mouse
Connect the keyboard and mouse as shown. Do not connect a Universal
Serial Bus (USB) mouse or keyboard to the USB connectors on the front of
the computer.
USB connectors (2)
headphones/speakers
connector