Dell PR09S setup guide Ports and Connectors, Usb

Ports and Connectors

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

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Media Base Setup Guide