rjz Posted December 7, 2005 Share Posted December 7, 2005 My boss wanted me to check on something odd. We just biult some new systems and he thought the usb ports were bad. He tried to use his san disk usb flash ram in the computers and they din;t detect. He has 3. He tried other devices and they worked. So I checked out 1 of them on 3 different systems and I got no response. Coudl he have somehow zapped them? Other devices did work. The frony usb was off maybe beacuse, the insternal back to front usb cable was reversed. Any thoghts? Link to comment Share on other sites More sharing options...
jaclaz Posted December 7, 2005 Share Posted December 7, 2005 They could have been "burned".There are two possibilities:1) the device is NOT detected at ALL2) the device is NOT detected "properly", i.e. the USB bus "senses" a device attached but does not load any driver for it as it cannot identify the said deviceTry using this program:http://www.c1tech.com.tw/Dload/i_disk/UsbIDCheck.zipAnd report if the USB bus can see the device (case 2 above), if it cannot (case 1 above), I think that nothing can be done.In case 2) it just "might" be possible to re-flash the controller with the proper deviceID (PID and VID), or at least it is worth a try.jaclaz Link to comment Share on other sites More sharing options...
rjz Posted December 8, 2005 Author Share Posted December 8, 2005 No detection at all. I was told that a cable on the insode the case was 1 pin off from the mobo to the front usb and that might have zapped them. Is this possable? Link to comment Share on other sites More sharing options...
jaclaz Posted December 8, 2005 Share Posted December 8, 2005 Yes, it is well possible.See here the connections for USB port:http://www.networktechinc.com/technote.htmlInternal -> External+5 Volts -> Pin 1 -> +5 Volts- Data -> Pin 2 -> - Data+Data -> Pin 3 -> +DataGND -> Pin 4 -> GNDIf the internal connector has been shifted like this:+5 Volts -> Pin 1 -> NOT CONNECTED- Data -> Pin 2 -> +5 Volts+Data -> Pin 3 -> - DataGND -> Pin 4 -> +Datathe key should have gotten NO damage, but if it was shifted like this:+5 Volts -> Pin 1 -> - Data- Data -> Pin 2 -> +Data+Data -> Pin 3 -> GNDGND -> Pin 4 -> NOT CONNECTEDit is quite likely that the key has been "fried" jaclaz Link to comment Share on other sites More sharing options...
rjz Posted December 9, 2005 Author Share Posted December 9, 2005 Would other devices fry to like usb mice? Link to comment Share on other sites More sharing options...
jaclaz Posted December 10, 2005 Share Posted December 10, 2005 Would other devices fry to like usb mice?Cannot say, maybe yes, maybe no.I remember once I made an error connecting an internal (PS/2) trackball to a notebook.The chip on the treckball microboard went rapidly hot as hell, but after I (promptly) disconnected it and let it cool down, it worked.I suspect that mice are less "fragile"....jaclaz Link to comment Share on other sites More sharing options...
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