iMac (27-inch, Mid 2010) Symptom Charts — Input/Output Devices 105
2010-09-09
3. Verify if a known-good USB
keyboard and mouse are
recognized.
Yes Test original USB mouse and
keyboard. Replace if still not
recognized. Go to step 5.
No External USB ports not
functioning. Replace logic
board.
M15
4. With no USB devices
connected, restart computer.
Verify if Bluetooth Mouse Setup
assistant launches after startup.
Yes Bluetooth detected.
Go to step 3.
No Bluetooth not recognized.
Internal and external USB not
functioning. Replace logic
board.
M15
5. With known-good USB
keyboard and mouse working,
test USB peripheral in question
(USB hard drive or printer, etc.)
Verify if device is recognized
in Apple System Proler under
USB.
Yes Device recognized. Test in all
USB ports to ensure all USB
ports working as expected.
Replace logic board for any
port failures.
M15
No Device may require more
power than supplied by USB
ports. Test with a powered
USB hub. Go to step 6.
6. Verify if using a powered USB
hub resolves the issue.
Yes Test device on the same
USB port of a same-model
computer without any other
USB port populated. If other
computer does not require
a powered USB hub to allow
the device functionality,
replace logic board.
M15
No The computer’s USB ports
and cable have been veried.
Ensure all software and
rmware updates have
been applied for computer
and device. If issue persists,
contact device manufacturer
for support. .