what is this for?

[gerry.dombroski]

I have in my possession a short 4" cable that has molded on one end a USB male and on the other end what seems to be a 3.5mm female jack. What in the heck is this used for? I'm not ready to just plug it in any USB port and plug in a set of headphones. Nor have I had the chance to ohm it out to get a pin-out. It's white with nothing else molded on it except for the standard USB symbol.

 

[alexoiu]

http/www.usbgear.com/KWLU004-6.html
or look for similar.

 

[gerry.dombroski]

http/www.usbgear.com/KWLU004-6.html
or look for similar.

Nope, not even close. 3.5 mm AUDIO. (I should have made that more clear.)

Thanks just the same.
What I really want to know is what it is INTENDED for, or what is it's INTENDED use?

 

[americanaudiophile]

Still could be a way to access 5vdc from a USB port for particular application. The 3.5mm jack may be two conductor not three. The stereo 3.5mm would still fit.

 

[gerry.dombroski]

Still could be a way to access 5vdc from a USB port for particular application. The 3.5mm jack may be two conductor not three. The stereo 3.5mm would still fit.

Could be, I'll have to find an unattached female USB to ohm it out. The only one handy was still attached to a USB board and gave crazy readings.
Still I have a feeling it is more than a 5-volt tap.
I am still wondering what is/was it's possible use and could I make use of it in the future.

 

[Alabalcho]

When you plug it in into your computer - does it register new USB device?

 

[gerry.dombroski]

When you plug it in into your computer - does it register new USB device?

It did not register as any sort of USB device, so no circuitry inside.
I ohm-ed it out and I was surprised, it's just a 5-volt tap!
Strange, any idea what it could have been used for or any idea on what I can potentially use it for?

Thanks for your patience... 😉

 

[darkbreeze]

Pic of the INSIDE of the 3.5mm end?

 

[gerry.dombroski]

Pic of the INSIDE of the 3.5mm end?

Yep, well a diagram. so it's nothing more that a probable single circuit, not stereo type, on the 3.5mm jack end.
I thought a picture / diagram would be better as the guys were patient with me.

Thanks ALL for your time and interest.
But if anyone has any ideas on what it was from or any potential use, I'm open for suggestions.

Gerry

 

[darkbreeze]

NO, I was asking if you can provide a pic of the INSIDE of the female 3.5mm end. Is there a pin inside there at all? How many connections separated by insulator are there, etc. A pic would be helpful.

 

[gerry.dombroski]

there is no center pin.
It's a type of jack that accepts a headphone type plug.
Impossible to look inside.
I did a scan of the inside and could not get light deep enough.
Anyhow here is a 1600 DPI scan with a paper tube and Bic (red) lighter to hold it upright:
http/ourpage.org/image/inside.jpg

 

[darkbreeze]

I do not see multiple separately insulated connections inside that 3.5mm jack so I seriously doubt it is for any kind of audio connection. More likely is that it is for some kind of power conversion from the USB 5v circuit. For WHAT, I cannot say, but I'm seeing only 5v and ground contact points on the 3.5mm so that would be my best guess. This is not a common or universal cable most likely. Seems it is probably for a very specific device unless I'm off the mark.