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Two small green circuit boards each with a 24-pin ATX and 4-pin Molex connector

TeKit

TeKit Add2PSU 24-pin ATX to 4-pin Molex adapter 2-pack

SKU CH-QFW8-E590Q

Adds a second PSU to a rig by bridging a 24-pin ATX and a 4-pin Molex connector in a compact 2.76 × 1.18 in board, two per pack

  • ColorGreen
  • SpecificationsMultiple Power Supply Adapter and Daisy Chain Connector, Add
  • FeaturesMultiple Power Supply Adapter and Daisy Chain Connector, Add
  • Weight10g
  • Package Quantity2pcs
  • Package Contents2pcs
  • Dual PSU support via 24-pin ATX and 4-pin Molex connectors
  • Relay triggers second PSU instantly when primary powers on
  • Compact 2.76" × 1.18" board fits tight case spaces
  • Plug-and-play design needs no cutting, soldering or taping
  • Two adapters included for multi-GPU or mining rig builds

TeKit Add2PSU dual PSU adapter

This two-pack provides a compact adapter that links a secondary power supply to the main system using a 24-pin ATX connector and a 4-pin Molex trigger. A small telecom relay on the board detects power from the primary PSU and switches the second unit on instantly. The green PCB measures 2.76 by 1.18 inches and weighs 10 grams, so it fits in tight chassis spaces without cutting or soldering wires.

Builders adding a second PSU for extra drives

The adapter suits anyone expanding a system with additional hard drives, fans, lighting or graphics cards where the original PSU lacks spare connectors or headroom. It is not for users who need a single high-wattage unit with native multi-GPU cables, nor for builds that cannot accommodate a second power supply at all.

24-pin ATX to 4-pin Molex relay trigger

The decisive specification is the 24-pin ATX input paired with a 4-pin Molex sense line that activates the relay. If your secondary PSU uses a different main connector or your primary PSU has no free Molex lead, this adapter will not work.

Highlights

  • Dual PSU support via 24-pin ATX and 4-pin Molex connectors
  • Relay triggers second PSU instantly when primary powers on
  • Compact 2.76" × 1.18" board fits tight case spaces
  • Plug-and-play design needs no cutting, soldering or taping
  • Two adapters included for multi-GPU or mining rig builds

Specifications

BrandTekit
ModelMultiple Power Supply Adapter and Daisy Chain Connector, Add2PSU
ColorGreen
SpecificationsMultiple Power Supply Adapter and Daisy Chain Connector, Add2PSU
FeaturesMultiple Power Supply Adapter and Daisy Chain Connector, Add2PSU
Weight10g
Package Quantity2pcs
Package Contents2pcs

Questions about this item

Will the 4-pin Molex connectors on the Add2PSU adapter need replacement over time?

The adapter uses standard 4-pin Molex and 24-pin ATX connectors rated for repeated mating cycles; no scheduled replacement is required unless a pin is bent or the housing cracks.

What limits continuous operation when running two power supplies through this adapter?

The onboard telecom relay and the 24-pin ATX connector’s current rating set the practical ceiling; sustained loads must stay within the ATX specification for each rail.

Does the adapter generate noticeable heat or noise when both PSUs run all day?

The relay is a low-power coil device with no moving fan; it runs silent and adds negligible heat inside a ventilated case.

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