Desktop Boards
Desktop Boards
Three-Wire and Four-Wire Fan Connectors

Chassis and processor fans use either a three-wire or four-wire connector. The three-wire connectors are for small chassis fans with lower power consumption. The four-wire connectors are for processor fans with higher power consumption.

Proper fan connector placement is shown in the figures below.

Three-wire fan connecting to a four-pin fan header

Fan header pinouts

Pin Three-wire fan support
1 Ground
2 +12 V
3 FAN_TACH
N/A N/A

Note When connecting a three-wire fan to a four-pin fan header, the fan is always on; there is no fan control.

Four-wire fan connecting to a four-pin fan header

Four-wire fan connecting to a three-pin fan header

Fan header pinouts

Pin Four-wire fan support
1 Ground
2 +12 V
3 FAN_TACH
4 FAN_CONTROL

Related topic
Find the specification for your board

This applies to:

Intel® Desktop Board D2500CC
Intel® Desktop Board D2500HN
Intel® Desktop Board D2550DC2
Intel® Desktop Board D2550MUD2
Intel® Desktop Board D2700DC
Intel® Desktop Board D2700MUD
Intel® Desktop Board D410PT
Intel® Desktop Board D425KT
Intel® Desktop Board D510MO
Intel® Desktop Board D525MW
Intel® Desktop Board D5400XS
Intel® Desktop Board D945GSEJT
Intel® Desktop Board DB65AL
Intel® Desktop Board DB75EN
Intel® Desktop Board DB85FL
Intel® Desktop Board DH55HC
Intel® Desktop Board DH55PJ
Intel® Desktop Board DH55TC
Intel® Desktop Board DH57DD
Intel® Desktop Board DH57JG
Intel® Desktop Board DH61AG
Intel® Desktop Board DH61AGL
Intel® Desktop Board DH61BE
Intel® Desktop Board DH61BF
Intel® Desktop Board DH61CR
Intel® Desktop Board DH61DL
Intel® Desktop Board DH61HO
Intel® Desktop Board DH61KVCH
Intel® Desktop Board DH61SA
Intel® Desktop Board DH61SKCH
Intel® Desktop Board DH61WW
Intel® Desktop Board DH61ZE
Intel® Desktop Board DH67BL
Intel® Desktop Board DH67CF
Intel® Desktop Board DH67CL
Intel® Desktop Board DH67GD
Intel® Desktop Board DH67VR
Intel® Desktop Board DH77DF
Intel® Desktop Board DH77EB
Intel® Desktop Board DH77KC
Intel® Desktop Board DH87MC
Intel® Desktop Board DH87RL
Intel® Desktop Board DN2800MT
Intel® Desktop Board DP55KG
Intel® Desktop Board DP55SB
Intel® Desktop Board DP55WB
Intel® Desktop Board DP55WG
Intel® Desktop Board DP67BA
Intel® Desktop Board DP67BG
Intel® Desktop Board DP67DE
Intel® Desktop Board DQ57TM
Intel® Desktop Board DQ57TML
Intel® Desktop Board DQ67EP
Intel® Desktop Board DQ67OW
Intel® Desktop Board DQ67SW
Intel® Desktop Board DQ77CP
Intel® Desktop Board DQ77KB
Intel® Desktop Board DQ77MK
Intel® Desktop Board DQ87PG
Intel® Desktop Board DX58OG
Intel® Desktop Board DX58SO
Intel® Desktop Board DX58SO2
Intel® Desktop Board DX79SI
Intel® Desktop Board DX79SR
Intel® Desktop Board DX79TO
Intel® Desktop Board DZ68BC
Intel® Desktop Board DZ68DB
Intel® Desktop Board DZ68ZV
Intel® Desktop Board DZ75ML-45K
Intel® Desktop Board DZ77BH-55K
Intel® Desktop Board DZ77GA-70K
Intel® Desktop Board DZ77RE-75K
Intel® Desktop Board DZ77SL-50K
Intel® Desktop Board DZ87KLT-75K

Solution ID: CS-012074
Last Modified: 23-Sep-2014
Date Created: 03-Jun-2004