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Two black inline-switched adapters with 5.5x2.1mm plugs and 4-pin fan headers, 11.8in cables

LORDWORLD

LORDWORLD DC5521 5.5x2.1mm to 4-Pin Fan Adapter 2-Pack 11.8in

SKU CH-0RDQ-050VA

Two adapters convert a 5.5 x 2.1 mm 12 V DC plug to a 4-pin fan header with an inline on/off switch, using 22 AWG tinned copper wire and rated for 36 W

  • Inline switch enables instant fan on/off control
  • 36 W maximum output supports low-power 12 V fans
  • 22 AWG tinned copper wiring resists corrosion and oxidation
  • DC 5.5×2.1 mm plug connects to standard 12 V adapters
  • Two 11.8 in adapters included for multiple fan setups

DC 5.5x2.1mm to 4-Pin Fan Adapter Pack

This two-pack converts a DC 5.5x2.1mm 12 V source into a standard four-pin fan header with an inline on-off switch. Each cable uses 22 AWG tinned copper wire for corrosion resistance and measures 11.8 inches end to end. The adapters suit hobbyists and technicians who need simple manual control of low-power 12 V cooling fans without motherboard headers.

Sustained-load behaviour with 36 W ceiling

The adapter passes 12 V at up to 36 W continuous output, so fans drawing less than that limit run steadily without overheating the cable. Only the power and ground pins are wired inside the four-pin connector, meaning PWM speed signals and tachometer feedback are not transmitted. The inline switch interrupts the supply cleanly for on-demand operation during long test sessions.

Verify your power source

Confirm that your DC supply delivers exactly 12 V through a 5.5x2.1mm barrel jack and can provide the wattage your fan requires. Fans rated above 36 W or those needing PWM control or speed reporting will not function correctly with this adapter. Buyers who need variable speed control, telemetry, or higher power delivery should look elsewhere.

Highlights

  • Inline switch enables instant fan on/off control
  • 36 W maximum output supports low-power 12 V fans
  • 22 AWG tinned copper wiring resists corrosion and oxidation
  • DC 5.5×2.1 mm plug connects to standard 12 V adapters
  • Two 11.8 in adapters included for multiple fan setups

Specifications

BrandLORDWORLD

Questions about this item

Does the inline switch on the 11.8in adapter generate noticeable heat when a 12V fan runs continuously at the 36W limit?

The switch handles the full 12V 3A load without active cooling; under sustained 36W use it will warm slightly but stays within normal operating temperature for 22AWG tinned copper wiring.

What external power source must I already have to use the DC5521 male plug on this adapter?

A 12V DC supply fitted with a 5.5x2.1mm barrel jack (centre-positive) capable of delivering up to 3A for the 36W maximum output.

Will the 4-pin connector on this adapter drive PWM speed control on a 4-pin fan I already own?

Only the power and ground pins are wired; the PWM and tachometer pins are empty, so the fan will run at full 12V speed with no PWM control or RPM reporting.

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