3.5mm Stereo Jack to USB Female Car Audio Cable for U-Disk

This is the lead that plays a USB stick through a car stereo’s AUX port — when — and only when — the head unit actually decodes USB audio presented that way. The 3.5mm stereo jack plugs into the car’s AUX socket; the USB female end takes the U disk. It is a wiring harness, not a decoder: the reading, decoding and playback all happen inside the car’s own head unit.

Read the limits before buying, they are the whole story of this product:

What it does and does not do

• Works only for U-disk playback through a decoding AUX/USB-capable head unit
• Does NOT support cell phones, MP3 players or iPods on the USB end
• Check your car manual (or ask the dealer) whether the AUX connector has USB decoding before purchase

U-disk requirements

• Capacity cannot be too large — depends on how much your car’s connector supports
• The stick must hold music files only: no other files, no folder structure
• MP3-format files in the root directory are the reliable case

If your head unit simply plays whatever arrives on AUX as an analogue line input, a USB stick on this lead will be silent — that is a limitation of the car, not a defect of the cable. Buyers who confirm the decoding capability first are the ones who end up happy; the 4S shop phone call takes two minutes and settles it.

Specifications

For the right car, it is the cheapest music upgrade there is — no new head unit, no Bluetooth module, just the stick you already own. For the wrong car, it is a cable that does nothing, which is why the manual check above is step one and the purchase is step two.

Samples, packing options, payment terms and warranty conditions are set out in How to Order and Delivery Information.