I have just finished building a computer that has been working fine. I have a 2TB external seagate 3.0 usb hard drive. The hard drive won't show up on my computer when plugged into the front usb ports of the computer but will work fine when plugged into the back of it
The answer likely is power limits. A USB2 standard port can supply up to 0.5 A at 5 VDC to a connected device, and that is barely enough to power a SMALL HDD, like many of the 2½" size used in laptops. The new USB3 standard ports can supply up to 0.9 A. So, two possibilities come to mind:
1. The ports on the back of your machine are more than "standard" and can supply more power than the ones on the front.
2. The rear ports are true USB3, and the front ports are USB2, and your USB3 external HDD unit actually does need the extra power available on a true USB3 port.
1. The ports on the back of your machine are more than "standard" and can supply more power than the ones on the front.
2. The rear ports are true USB3, and the front ports are USB2, and your USB3 external HDD unit actually does need the extra power available on a true USB3 port.
You say you built the computer. It has 2 USB2 and 2 USB3 ports on the front of the case. Please tell us:
1. What case do you have?
2. What motherboard do you have?
3. What mobo ports have you used to plug in the two cables from the case front for USB2 and USB3 front connectors?
1. What case do you have?
2. What motherboard do you have?
3. What mobo ports have you used to plug in the two cables from the case front for USB2 and USB3 front connectors?
not 100% sure as I had a fiddle around with a couple of different things and it worked after that....I didn't actually check every time as I was getting annoyed of reaching under my desk to get to the back of my computer for the cable every couple of minutes to then have to put it back again
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