BaseQi Ninja Drive - The best Surface Book accessory not made by Microsoft
The Surface Book standard SD memory card slot is a great feature. My SLR & Compact cameras both use them but my phone, bike, and car cameras use Micro-SD. It is easy enough to use an adaptor for them but it sticks out so bagging, travelling, with it in is risky.

I noticed PB Tech stocked the “BaseQi Aluminium Micro SD Adapter” which takes a Micro-SD. It fits flush, with a recess to enable easy extraction, so I can leave the adaptor in the slot. It’s a convenient way to always have an adaptor available but in future, should I need more storage, it will be handy as an extension drive.

See more about the PC Ninja Drive or, if you have the wrong machine, Mac version. The company history is interesting too, designed by avid Mac fans!