Apple Mac mini Manual De Usuario

Mac mini (Mid 2010) Symptom Charts — Input/Output Devices 

2010-08-03

USB Devices Not Recognized
•  USB wired keyboard/mouse not 

recognized

•  USB external drive not 

recognized

•  USB printer not recognized

1.  For printers and external USB drives, make sure 

any external power source is plugged in and 

operating to isolate a power issue with the 

device.

2.  The system has 4 USB ports on the rear of the 

computer. Make sure to try each port to isolate a 

particular port malfunction.

3.  Test with a known good wired keyboard or 

mouse to isolate a failed peripheral issue. 

4.  Test with a known good USB cable when dealing 

with a printer or external USB drive, to isolate a 

USB cable issue.

5.  Ensure that all available Software Updates have 

been applied to the computer for access to the 

latest bug fixes.

1.  Unplug all USB devices from 

the computer except for the 

keyboard and mouse. Start 

the computer and reset PRAM. 

Are the keyboard and mouse 

recognized?

Yes

Test in all USB ports to ensure 

all USB ports working as 

expected. Replace logic board 

for any port failures.

No

Possible logic board failure. 

Go to step 2

2.  Did Bluetooth Mouse Setup 

assistant launch after startup?

Yes

Bluetooth detected via 

Internal USB, but external USB 

devices not recognized. Go to 

step 3

No

Bluetooth not recognized 

via internal USB. Disconnect 

mouse and keyboard. Go to 

step 4