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Short 20.5cm cable with 3.5mm male plug and USB 2.0 Type A female port

Defendwe

Defendwe 3.5mm Male AUX to USB 2.0 Type A Female OTG Adapter Cable 20.5cm

SKU CH-97E1-X61EV

Connects a USB flash drive to a car AUX port for MP3 playback using a 3.5mm jack and USB 2.0 female connector, 20.5cm cable length

  • Connection typeMicro USB to USB A
  • Plays MP3 files from a USB flash drive via 3.5mm AUX input
  • 5cm cable keeps car interior tidy with no excess slack
  • USB 2.0 female port accepts standard thumb drives directly
  • Works with car AUX ports that support USB decoding function
  • Simple plug-and-play connection requires no external power source

What it is and who it fits

This adapter converts a 3.5mm stereo audio plug into a USB 2.0 Type A female port using an OTG connection. It is intended for car owners whose auxiliary input can read MP3 files directly from a USB flash drive. The cable measures 20.5cm and is sold new without retail packaging.

Capacity and headroom

The USB female port accepts a U-Disk for MP3 playback through the car AUX system. Compatibility depends on the vehicle: only AUX ports with built-in decoding can use this cable. Capacity limits vary by car, and the supplier advises keeping the flash drive free of folders or non-MP3 files.

Practical limits of the interface

The adapter relies on USB 2.0 signalling and a 3.5mm analogue audio connection. It cannot add decoding ability to an AUX port that lacks it, and it will not work with devices that require host-mode USB power or data protocols beyond simple MP3 file reading.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $15.99
Pricier than about 55% of the 15,227 comparable items (median $14.99).

Specifications

Ports & slots
Connection typeMicro USB to USB A

Questions about this item

Will the 3.5 mm male plug work with the AUX port in my older car stereo?

The adapter uses a standard 3.5 mm stereo plug that fits most car AUX ports, but playback only works if the vehicle's AUX input supports USB decoding and can read MP3 files directly from a flash drive.

How can I verify the USB 2.0 female port is reading my flash drive correctly after connecting it?

Insert a USB drive containing only MP3 files in the root folder with no subfolders; if the car stereo indexes and plays the tracks, the OTG connection is functioning as intended.

Does the 20.5 cm cable come with a flash drive or any other accessories in the package?

The box contains only the 3.5 mm male to USB female adapter cable; a compatible USB flash drive must be purchased separately.

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