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3 to 2-1 Power Cable Splitter This device allows powerful 3-pin temperature-sensing fans to be plugged directly to a 4-pin connector on a power supply, yet still monitoring the temperature on the motherboard. This was designed and engineered by Directron.com.
Introduction: If you have a high-RPM (CFM) fan with a 3-pin connector to mobo, you may be concerned that it may draw too much power from your motherboard. How do you supply the power from the power supply without losing the temperature sensing feature? No problem! This device will allow you to run a fan or cooler with a three-pin molex connector off your power supply while still sending the sensing information to the motherboard.
High-end case fans and CPU fans drain so much power that the motherboard may not supply enough power. Ideally, it'd be nice to power such powerful fans directly through the power supply. However, such fans often have the temperature sensing function through the third, yellow/blue wire, which cannot be wired through the 4-pin push-thru connectors from a power supply, and must be connected to the motherboard through a 3-pin molex connector. This device solves this problem!
How Does it Work?: On one end it has a 3-pin male plug for you to plug the 3-pin female plug from the fan into. The other end has two connectors: A male 4-pin moles connector with two wires (red and black) that can be connected to a regular power supply 4 pin molex connector. The second connector on the other end is a single-wire (yellow/blue) 3-pin female connector that you plug to your motherboard to sense the temperature.
In other words, the splitter allows dc voltage to be supplied from a power supply while keeping the temperature sensing function of the fan!
Specs: The 3-pin cable is 12" long.
Reseller Pricing: Only $2.99 for resellers.
Notes: (1) Directron.com has a $10 minimum-order requirement. You may select other <$10 items to meet the requirement. (2) You must purchase the 3-to-4 pin adapter as an option or separately in order for this device to work properly. Unless you already have such a device, purchasing the 3-to-4 pin adapter is highly recommended. (3) Some may refer to this product as a RPM cable, or tach cable. (4) Perhaps the most important reading given by a fan is its current RPM. This is detected by the motherboard via the yellow/blue wire. Programs are available that can be used to shutdown or sound an alarm in the event a attached fan dies and drops to 0 RPM. These are often available free on the motherboard driver CD or from 3rd parties.
Related Items: | 3 To 4 Pin Adapter | Case Fans | Gallery |
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