3. Are known good mouse and

Yes

Test original mouse and

 

keyboard recognized?

 

keyboard. Replace if still not

 

 

 

recognized. Go to step 5

 

 

 

 

 

 

No

External USB ports not

 

 

 

functioning. Replace logic

 

 

 

board.

 

 

 

 

 

4. With no USB devices

Yes

Bluetooth detected via

 

connected, restart the

 

Internal USB. Go to step 3

 

computer. Did Bluetooth

 

 

 

No

Bluetooth not recognized

M15

Mouse Setup assistant launch

 

via internal USB. Internal and

 

after startup?

 

 

 

external USB not functioning.

 

 

 

 

 

 

Replace logic board.

 

 

 

 

 

5. With known good mouse and

Yes

Device recognized. Test in all

 

keyboard working, test other

 

USB ports to ensure all USB

 

USB peripheral in question

 

ports working as expected.

 

(USB external drive or printer,

 

Replace logic board for any

 

etc.). Is the device recognized

 

port failures.

 

via Apple System Profiler under

 

 

 

No

Device may require more

 

USB?

 

 

 

power than supplied by USB

 

 

 

ports. Try powered USB hub.

 

 

 

Go to step 6

 

 

 

 

 

6. Does powered USB hub resolve

Yes

Test device on another

 

issue?

 

computer of the same

 

 

 

make and model. If another

 

 

 

computer does not require

 

 

 

a powered USB hub to allow

 

 

 

functionality, replace the logic

 

 

 

board

 

 

 

 

 

 

No

Test device on another

 

 

 

computer of the same

 

 

 

make and model. If another

 

 

 

computer does not recognize

 

 

 

the device, replace the device

 

 

 

 

 

2009-11-03

Mac mini (Late 2009) Symptom Charts — Input/Output Devices  70

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Apple LATE 2009 manual M15, Usb?