Fan connector pinout

Woodpecker and Robin baseboards may implement a fan connector. Due to easy available fans on the consumer PC market the same connector has been used. (The 3 pin connector has been used, not the 4 pin connector)

• Tyco 3-641126-3

Pinout:

• 1 GND
• 2 +12V
• 3 tacho signal (often not implemented)

Unfortunately the pinout in the schematic of the following carrierboards and documents is wrong:

• Lily V 1.0
• Lily V 1.1
• Lily V 2.0
• Design Guide for ETXexpress Carrier Boards Rev. 1.4 / May 17, 2007

In order to assure compatibility with consumer PC market fans the connector itself was assembled 180° turned. So, in the end the fan can be plugged and is working.

4 pin fan connector

The 3 pin connector is recommended for carrierboard designs. The following picture of a 4 pin connector serves only as reference for the pinout numbering.

Reference document

• Intel specification for a 4 pin fan connector Although this page is related to the 3 pin connector, the 4 pin reference document used the same pinout for the first three pins.