6 Replies Latest reply: Oct 22, 2013 4:22 PM by cyclewatts
JKP! Level 1 (5 points)

I have a SanDisk Extreme 16GB HD Video 30mb/sec Class 10 SDHC I card.


Some times my MB PRO will read it using the SD SLOT, sometimes it wont....????


90% of the time I have to use an external USB Card reader!!!


Anybody have any ideas why this is happening to my BRAND NEW MACBOOK PRO 15" Full load laptop!!!???


Thanks for the help!