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Black USB-A male to female cable with inline switch and 5.5x2.1mm barrel connector

Fervit

Fervit USB-A Male to Female Power Cable with Switch 5.5x2.1mm

SKU CH-5PAE-5YH9J

USB-A power cable with inline switch and 5.5×2.1 mm DC plug, up to 5 V 3 A for low-power devices, no data

  • Built-in switch cuts power without unplugging, extending port life
  • USB-A male to 5.5×2.1 mm female for DC 5 V devices
  • Two-core cable delivers up to 3 A for low-power charging only
  • No data transfer — dedicated power line for lamps, fans, cameras
  • Avoids wear from repeated insertion on USB-A ports

What this cable does

The Fervit USB-A male to female power cable provides a switched 5 V DC connection for low-power devices. It is intended for users who want to turn power on and off without repeatedly plugging and unplugging the connector. The integrated button protects the USB-A port from wear during frequent use. This cable only delivers power and does not transfer data.

Charging-only limitation

The cable uses a two-core design that carries only DC power at up to 5 V 3 A. It does not support any fast-charging protocol and cannot be used with USB Power Delivery chargers. Data lines are absent, so the cable will not work for file transfer, tethering or any communication between host and peripheral. High-power equipment such as computers must not be connected.

Suitable loads and limits

The switch cable comfortably powers USB desk lamps, small fans, LED light bars, mobile phones and similar 5 V accessories. It runs out of headroom when a device draws more than the 3 A maximum or requires a higher voltage. The 5.5x2.1 mm barrel connector fits matching DC jacks, but the cable cannot supply power beyond the stated 5 V limit.

Highlights

  • Built-in switch cuts power without unplugging, extending port life
  • USB-A male to 5.5×2.1 mm female for DC 5 V devices
  • Two-core cable delivers up to 3 A for low-power charging only
  • No data transfer — dedicated power line for lamps, fans, cameras
  • Avoids wear from repeated insertion on USB-A ports

Specifications

BrandFervit

Questions about this item

Should I pick the 5.5 mm by 2.1 mm barrel version or another size?

This cable uses a 5.5 mm by 2.1 mm DC barrel connector; choose it only if your device matches that exact size.

What does the 5 V 3 A rating mean when I plug it into a real device?

It supplies up to 3 A at 5 V for charging only; data lines are not connected, so it powers LED lamps, fans or phones but not laptops or PD chargers.

Does the USB-A interface limit what I can power?

The USB-A male plug draws from any standard 5 V USB port, and the inline switch lets you cut power without unplugging, reducing wear on the port.

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