Good evening everyone! There is such a problem - when connecting to a computer, an external hard drive and iPhone do not take power from the usb connector, both devices work fine - the hard disk works on another computer, the iPhone also charges from other computers, and in this computer flash drives work normally. why can it happen like this? If because of bp, how to check? Or if in the settings of the usb how to look? Thank you all in advance!
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3 answers
what OS?
1) For example, if you look in Windows (USB Root Concentrator), it says that this device can use 500 mA.
2) Try testing a cable with two connectors for a disk (for many screws and DVDs, this is the exact delivery from the manufacturer).
3) Temporarily take the power supply from another computer and put it on your own - everything will immediately become clear.
4) Possible problems for the mother (for example, BIOS settings)
Justicet justicet
1,792 8 silver marks 8 bronze marks
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To measure the multitester on the motherboard current, then on the USB interface itself. Interfaces on the back have similar problems? The spouse in the hospital miscarriages on the face were ordered to live a long time, first checked the rear panel, then the miscarriage connector, then the USB on the sistemnik's face
pryanikoff pryanikoff
one 1 bronze sign
- Thank you, but everything has already been decided after I rolled back the system - mixail
- oneAnd it was not necessary to roll it all! Looks like it was in the drivers. The standby mode turned on, and did not turn off! And in standby mode, power is just not served. - Anton Reshin
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From @AntonReshin's comment :
Looks like it was in the drivers. Standby mode turned on, and did not turn off. And in standby mode, power is just not served.
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