sd card not detected by MacBook Air early 2014
My MacBook Air early 2014 does not give any activity when I put in my SanDisk Ultra 4GB card in the card reader.
I searched through other discussions, and already made sure I put on 'hard disk' on my Finder preferences, I put the SD card in 100%, 90%, halfway, I locked and unlocked and semi-locked the SD-card.. no activity at all.
I need the SD card since my photo camera is broken and I cannot use my USB with that anymore.
MacBook Air (13-inch, Early 2014), OS X El Capitan (10.11.1)