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USB 2.0 Type-A to DC 5.5x2.1mm cable with inline power switch button

Fervit

Fervit USB 2.0 On/Off Power Switch Cable Type-A to DC 5.5x2.1mm

SKU CH-WAKM-G3J2H

A USB 2.0 power cable with an inline on/off switch and a 5.5×2.1 mm DC plug for 5 V devices up to 3 A

  • Power on/off without unplugging via inline button
  • Connects USB-A to 5.5×2.1 mm DC devices
  • Supports up to 5 V 3 A for low-power gear
  • No data transfer — power-only two-core cable
  • Extends reach for lamps, fans, cameras, more

USB 2.0 power switch cable for DC devices

This Fervit cable connects a USB Type-A port to a 5.5 mm by 2.1 mm DC plug and includes an inline on/off button. It is designed for low-power peripherals such as LED lamps, small fans or dashboard cameras that draw up to 5 V 3 A. The cable carries power only and cannot transfer data.

Behaviour under sustained load

The two-core conductors are rated for a maximum of 5 V 3 A and do not support any fast-charging protocol. Continuous operation at the rated current is within specification for the intended small appliances, but the cable must not be used with high-power equipment or plugged directly into a Power Delivery charger. The switch simply interrupts the DC line without active electronics.

5.5 mm by 2.1 mm DC connector fit

Compatibility depends entirely on the target device using a centre-positive 5.5 mm outer and 2.1 mm inner DC barrel jack. Buyers whose equipment uses a different barrel size, a locking connector or a proprietary power port cannot use this cable. No adapter is included.

Highlights

  • Power on/off without unplugging via inline button
  • Connects USB-A to 5.5×2.1 mm DC devices
  • Supports up to 5 V 3 A for low-power gear
  • No data transfer — power-only two-core cable
  • Extends reach for lamps, fans, cameras, more

Specifications

BrandFervit

Questions about this item

Does the on/off switch stay cool and quiet when the cable powers a 5 V 3 A load all day?

The cable carries only DC 5 V power up to 3 A and has no active components, so the switch itself generates no audible noise or noticeable heat during continuous use.

What must I already own to use this Fervit USB 2.0 switch cable with a DC 5.5 × 2.1 mm device?

You need a standard USB Type-A port that supplies 5 V and a device fitted with a 5.5 mm outer / 2.1 mm inner DC barrel jack.

Will the switch cable work with an older 5 V desk lamp that has a 5.5 × 2.1 mm input?

Yes, the cable delivers plain 5 V DC power up to 3 A and the inline switch lets you turn the lamp on and off without unplugging it.

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