21IN1 Multimedia Reader/writer Expresscard 34SLOT Mac/pc Sd/mmc/xd

I am using this card as an SD card reader for my MacBook Pro. It fits flush in this laptop computer, so I never have to take it out. It reads the SD cards as it is intended without issues. It should also read MMC and XD cards, but I have not tried these.Buy 21IN1 Multimedia Reader/writer Expresscard 34SLOT Mac/pc Sd/mmc/xd!