These Sandisk adapters are foolproof and work great. You can boot OS X from these but it is noticeably slower than booting from an SSD or HDD. I used a high-speed "gold" SD card which helped speed things up somewhat. For whatever reason, I haven't been able to figure out how to boot Windows from an SD card using this adapter, whether on a MacBook Pro or on a standard Windows laptop. I suppose you need a special BIOS that has the capability to do so. I was hoping that I could boot my MBP into Windows using this adapter and not have to install Windows using BootCamp, but it didn't work. (I also couldn't boot Windows from a WinTec 96 GB ExpressCard.) Mostly, I use this card as an emergency bootup for OS X and as a quick way to transfer photos from my digital camera. The card sticks out slightly so it is not as elegant as, say, a Lexar 8 GB ExpressCard which seats flush. When inserting and ejecting the SD card, you often have to also insert or eject the entire SD card adapter for Windows to recognize what just happened. You will see another adapter like this (I think from Sony) that has a spring-loaded mechanism which supposedly allows you to push on the SD card to eject it instead of pulling it out, but that product has the same flaws as this one (that product also often requires inserting or ejecting the entire adapter for Windows to realize that something just changed). The spring-loaded feature of that other product doesn't even work that good - the SD card still stays stuck in the adapter and when you try to dislodge it, the adapter comes out at the same time. I would recommend saving your money and buying this Sandisk product rather than the spring-loaded one. Read full review
Verified purchase: Yes | Condition: New
My laptop lacks an SD card slot, so this is the best option I've found to read SDHC camera cards. The FlashBack adapter slides easily into the mini PCI card slot, instantly adding an SDHC card slot with no driver software required. Just snap it in and you're good to go. The adapter inserts fully into the slot and the card inserts fully into the adapter so everything is flush with the side of the computer; however, this does necessitate removing the adapter from the computer to insert or remove an SD card. Other than that, it's darn near perfect. I find this to be such a vital accessory that the word 'accessory' almost doesn't fit. It has simply become an integral part of my computer.
Verified purchase: No
I ordered this before I found where the engineers hid the SD slot on my Elitebook from HP. This seems to be way faster then the built in slot, and is handier to get to so I seem to use it way more then the built in slot. Love the little card, and for the price it was well worth the money!
Verified purchase: Yes | Condition: New
With older laptops the built-in card readers can be problematic to find drivers for. This happened to me after upgrading to Windows 10 as well as for running a Hackintosh on a Lenovo X220 laptop. The SanDisk adapter does not seem to require an special driver and I am now able to read SD cards under both Win10 and Hackintosh on my Lenovo laptop.
Verified purchase: Yes | Condition: New
Nice device, adds much needed SD card reading capabilities to MacBook Pro. Have in mind that it is easier to eject the device from express-card slot than to pull the SD card out.
Verified purchase: Yes | Condition: New
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