Dell Latitude Série Guide De Configuration page 22

Ports and Connectors
Network connector
USB
Powered USB
Parallel
Video
DVI connector
Serial
Audio
Docking
20
Media Base Setup Guide
RJ-45 port for 10/100/1000 Mbits/second
BaseTX Bus Master Ethernet
three 4-pin USB-2.0 compliant connectors
one 9-pin USB-2.0 compliant connector
25-hole connector; unidirectional,
bidirectional, or ECP
15-hole connector
24-hole connector
9-pin connector; 16550C-compatible UART
with 16-byte buffer
headphone/speaker (line-out) mini connector
280-pin connector