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Black 24-pin ATX to 18-pin power adapter cable, 30cm length

SMUGDESK

SMUGDESK ATX 24Pin to 18Pin PSU Adapter Cable for HP Z420 Z620 30cm

SKU CH-0TD7-QC8ZD

Converts a standard 24‑pin ATX supply to the proprietary 18‑pin connector on HP Z420 and Z620 workstations, using 18AWG wire and a 30cm length for clean internal routing

  • Converts standard ATX 24-pin PSU to HP Z420/Z620 18-pin motherboard port
  • 18AWG heavy-gauge wire delivers stable current under full workstation load
  • 30 cm length fits internal chassis routing without excess cable clutter
  • Precisely wired pin assignment dedicated to HP Z420 and Z620 mainboards
  • Plug-and-play adapter enables aftermarket PSU upgrade for proprietary workstations

ATX 24-pin to 18-pin conversion for HP workstations

This adapter cable lets you connect a standard ATX power supply to the proprietary 18-pin motherboard connector found in HP Z420 and Z620 workstations. It replaces the original power supply without rewiring the motherboard. The 30 cm length provides enough slack for typical chassis routing. Builders upgrading or repairing these specific workstations can use a common aftermarket PSU instead of sourcing a rare proprietary unit.

18AWG wiring reduces voltage drop under load

The cable uses 18AWG conductors, which are thicker than the thin wires found on many generic adapters. This heavier gauge lowers resistance and keeps voltage stable when the workstation draws full power. Precise pin assignment matches the Z420 and Z620 18-pin definition exactly, so no manual repinning is required. The plug-and-play design means the system powers on immediately after both connectors are seated.

Only compatible with HP Z420 and Z620 motherboards

This cable will not fit any other workstation, desktop or server motherboard, even if the port looks similar. The 18-pin layout is unique to these two HP models, so attempting to use it elsewhere risks damage. Buyers who need to adapt a different proprietary pinout, or who want a universal ATX extension, must look for a different product. The 30 cm length also limits flexibility in very large or unusually laid-out cases.

How it compares

Measured against everything we stock in Jumper & Adapter Power Cords, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 60% of the 402 comparable items (median $13.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 18AWG wire insulation degrade if the cable runs hot inside the chassis?

The 18AWG heavy-gauge conductors are rated for the sustained current draw of Z420 and Z620 workstations, so insulation breakdown under normal operating temperatures is not expected.

What is the first limit reached when the converted PSU powers a fully loaded Z420 or Z620 all day?

The 30 cm length and 18AWG wire keep voltage drop low, so the practical limit is the wattage rating of the aftermarket ATX power supply you connect, not the adapter itself.

Does the adapter add audible noise or noticeable heat during continuous operation?

As a passive cable with no active components, it generates no fan noise and only minimal resistive heat well within the 18AWG rating for full-load workstation use.

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