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Two blue rectangular ATX breakout boards with 24-pin connectors, binding posts, fuses, USB port, switch and indicator LEDs

Vszerda

Vszerda 2pcs 20/24 Pin ATX Benchtop Power Adapter Board with USB 5V Port Blue

SKU CH-E76T-VMBH4

Two ATX breakout boards convert a PC power supply into a bench unit with 3.3 V, 5 V, 12 V and −12 V binding-post outputs, each fused at 5 A

  • Converts ATX supply to benchtop power with four voltage rails
  • 3 V, 5 V, 12 V and –12 V outputs each fused at 5 A
  • Built‑in power switch and LED indicator for safe bench control
  • 24‑pin ATX connector accepts 20‑pin plugs for broad compatibility
  • Compact 128 × 48 × 30 mm board with insulated spacers prevents shorts

Benchtop Adapter with USB 5 V

The Vszerda ATX breakout board converts a standard PC power supply into a benchtop unit for embedded-electronics development. Four regulated rails — 3.3 V, 5 V, 12 V and -12 V — plus a USB 5 V port are brought out to binding posts for quick wiring. Each rail includes a replaceable 5 A fuse and a power indicator, while an on-board switch controls all outputs. Plastic spacers on the PCB prevent short circuits during bench use.

Upgrades from Paper-Clip Jumpers

Makers who currently short the green and black ATX pins to start a supply gain fused outputs, voltage monitoring and a proper power switch. The jump is worth it when a project needs simultaneous 3.3 V, 5 V and 12 V rails with over-current protection instead of a single unmonitored feed. Builders who only need a single fixed voltage or who already own a dedicated laboratory supply will not benefit from this adapter.

Limited by ATX Supply Ratings

The board passes whatever current the connected ATX supply can deliver on each rail, capped at 5 A per channel by the fitted fuses. Total power is therefore constrained by the supply’s own 3.3 V, 5 V and 12 V ratings, not by the adapter. The 24-pin connector accepts both 20-pin and 24-pin plugs, but provides no voltage regulation or isolation beyond the source supply.

Highlights

  • Converts ATX supply to benchtop power with four voltage rails
  • 3 V, 5 V, 12 V and –12 V outputs each fused at 5 A
  • Built‑in power switch and LED indicator for safe bench control
  • 24‑pin ATX connector accepts 20‑pin plugs for broad compatibility
  • Compact 128 × 48 × 30 mm board with insulated spacers prevents shorts

Specifications

No published specifications for this item yet.

Questions about this item

What board dimensions and spacer design should I plan for when fitting this ATX breakout board?

The board measures 128x48x30 mm (5.04x1.89x1.18 in) and includes plastic spacers to prevent short circuits when placed on a benchtop.

How do I connect an ATX supply to the board, and which step is often missed?

Plug the 20- or 24-pin ATX connector into the on-board socket, then press the module switch to enable the 3.3V, 5V, 12V and -12V binding-post outputs.

When must the 5 A fuses on each voltage rail be replaced?

Replace a fuse only after an over-current event blows it; each of the four rails has its own user-replaceable 5 A fuse.

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