USB SD Card Reader Says 'Please insert Disk'

You have the reader but you need an SD/MMC card in it. It's only a reader or adapter, like a DVD player needs a DVD to play.
 
Morning I just woke up...Is the SD card unlocked? The little tiny white switch on the side. Sometimes when I don't pay attention that happens to me any I wonder why I can't access it.
 
Yea, tried it on a different PC. That time it seemed to also show the SD card along with the adapter but still couldn't access anything.
 
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I have a couple of these, SD-MMC Card Reader. No drivers needed and no issues reading SD cards as of yet. Yours seems a bit more involved and reads many more card types, that's why I wondered if it needed drivers installed.

Depends on what type of cards you use. I only use SD and Micro SD. I already have the Micro SD to SD card adapter.
 
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