Dell Precision T1650 Owner's Manual page 58

Feature
PCI Express x16 data width (maximum) — 16 PCI Express
lanes
Serial ATA
Memory
Internal USB
System Fan
Front panel control
Thermal Sensor
Processor
Processor Fan
Service mode jumper
Password clear jumper
RTC reset jumper
Internal speaker
Intruder connector
Power connector:
Table 24. Controls and Lights
Feature
Front of the computer:
Power button light
Drive activity light
Back of the computer:
Link integrity light on integrated network adapter
Network activity light on integrated network
adapter
58
Specification
one 164-pin connector
four 7-pin connectors
four 240-pin connectors
one 10-pin connector
one 5-pin connector
one 6 pins and two 20 pins connectors
one 2-pin connector
one 1155-pin connector
one 5-pin connector
one 2-pin connector
one 2-pin connector
one 2-pin connector
one 5-pin connector
one 3-pin connector
one 24-pin and one 4-pin connector
Specification
White light — Solid white light indicates power-on state;
blinking white light indicates sleep state of the computer.
White light — Blinking white light indicates that the
computer is reading data from or writing data to the hard
drive.
Green — a good 10 Mbps connection exists between the
network and the computer.
Orange — a good 100 Mbps connection exists between
the network and the computer.
Yellow — a good 1000 Mbps connection exists between
the network and the computer.
Off (no light) — the computer is not detecting a physical
connection to the network.
Yellow light — A blinking yellow light indicates that
network activity is present.