The Black Art of Dual PSUs in Your Enthusiast PC

Putting two powers supplies in your computer has been a recurring subject in our forums for years. While the physical process of making that happen is not exactly rocket science, it still can be daunting for some users. Today we show you a few products that make it easy for anyone to double up on the power should your wattage needs increase.

continued...

Lian Li Secondary Power Supply Starter Kit Overview

Article Image

As we see here, Lian Li is operating under a very loose definition of the word "kit" as the Lian Li Secondary Power Supply Starter Kit only contains a dual power supply adapter cable that came in a clear plastic bag. There is literally nothing else in the "kit." On the upside, the actual construction is very good and the pins are better seated than what I often see in 24-pin ATX connectors from major power supply OEMs so Lian Li at least does a good job of putting the cable together. In addition to combining two PSU to be started by a single switch, the adapter offers ~4 1/2" of extension to your primary 24-pin ATX connector. Maybe the extension is the other part of the kit?

Lian Li Secondary Power Supply Starter Kit Function

Article Image Article Image

As we see in the picture and video above, the Secondary Power Supply Starter Kit uses the 24pin ATX connector from the primary (i.e. already installed) power supply and the 24pin ATX connector of the secondary power supply (i.e. power supply being added) along with a wire to connect the two PS_On pin’s to turn on both power supplies at once. Once the two units are connected, users can then connect the Secondary Power Supply Starter Kit to their motherboard before powering on their system. As stated above, you do gain some extra reach with this method, but unlike the Add2Psu, you can’t mount this adapter out of the way nearly as well so your wire management will likely suffer using this product.

As we see in the video above, after connecting the Secondary Power Supply Starter Kit it successfully turns on both power supplies at once allowing users to expand the number of PCI-Express, SATA, and Molex connectors in their system to support things not possible with the original power supply because of either physical or electrical restraints. Unlike with the Add2Psu method, the Secondary Power Supply Starter Kit does not use up a Molex connector so you retain full use of all of your peripheral connectors which is a bit of a bonus. Though if you are using every Molex connector on two power supplies maybe you need three power supplies which can be done as well.

Let’s move on now and change gears a bit and look at an Auxiliary Power Supply from FSP.