When an MP3 charging cord is plugged to your computer but only charges in a few seconds while plugged in what does it?

Most frequently, this is a problem with a driver, bad charging cord, or incompatible device. You might also make sure that the port you are attempting to use is at least USB 2.0 if not USB 3.0. Admittedly, all USB ports manufactured in the past few years have been USB 2.0 at a minimum but if you have an older computer, you may have only USB 1.1 and that could be what is causing you fits.

If you have other devices that use the same type of connector (such as microUSB) to charge, then try plugging such a device into the same cord and see whether the charging works for it. If so, then the problem will not be with the USB port or cord, so that narrows it to the driver or the MP3 player itself.

Without knowing more or seeing it, there is not too much more that I can tell you, so I hope this helps to point you in the right direction. If you have other questions, however, or would like to discuss this further, feel free to drop me a line. I'm always glad to help.