ESD damage to laptop's USB ports

[PCBONEZ]

Re: ESD damage to laptop's USB ports

thanks for the input pcbonez. I think I should learn more about power management of USB and stuff.

Look at several because they aren't all the same.
Some are just taped of a +5v rail with a fuse and an EMI filter.
Others have an actual IC. [Or the power management is incorporated into the USB IC.]
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[PCBONEZ]

Re: ESD damage to laptop's USB ports

Powered usb hub is the way to go.

That would work if at least one port works and he doesn't mind packing more stuff around with the laptop.
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[joshnz]

Re: ESD damage to laptop's USB ports

That would work if at least one port works and he doesn't mind packing more stuff around with the laptop.
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LOL forgot it was a laptop. my friend has to do that on his desktop he kept complaining his computer would freeze or the hdd would not work.

[mikail13]

Re: ESD damage to laptop's USB ports

i have seeen same problem on my desktop mobo.

reason is power supply... i changed it. problem was solved.

Thank you for the answers, people, but as I stated on the original post the USB ports *are working*. The only problem (albeit a large one) is that there doesn't seem to be enough power to drive non-self-powered devices. Again, I can use external DVD drives, external hard drives, etc, as long as those devices don't draw their power from the USB port.

The USB spec requires 500mA to be available at the ports; the USB-specific current-limiting devices I have seen usually cite 1.5A as the upper limit (check for instance the TI TPS2062). I don't think this ports are providing more than a few (50mA? How much a thumb drive requires?) mA. My guess is that a device like this is fried, but I can't find any mention of these things on the 600m