Apple MacBook Pro 13 inch - Input;Output Devices; USB Port Does Not Recognize Known Devices

MacBook Pro (13-inch) Symptom Charts — Input/Output Devices 93
2010-09-14
Input/Output Devices
USB Port Does Not Recognize Known Devices
Unlikely cause: LCD, hard drive, optical drive
Quick Check
Symptom Quick Check
USB Port does not recognize
known devices
• USB wired keyboard or mouse
not recognized
• USB ash drive not recognized
1. Check the for latest software update.
2. Use Apple System Proler to verify the computer
recognizes the USB bus.
3. Test port with known good Apple keyboard or
mouse.
4. Verify any USB hubs have sucient power.
Deep Dive
Check Result Action Code
1. Reset SMC and clear PRAM.
Was USB device recognized?
Yes Issue resolved.
No Go to step 2.
2. Is USB device receiving power
from USB port? Note: rst
device to need >500ma will
get 1000ma, all others are
limited to <500ma.
Yes Go to step 3.
No Replace logic board. M15
3. Is the latest Mac-compatible
USB software driver for this
USB device installed?
Yes Replace logic board. M15
No Obtain Mac-compatible USB
driver.