I'm happy to report that this adapter works great with Microsoft Surface Book with no modifications. I bought it along with a 128GB PNY memory card to increase the storage capacity of my 256GB i7 Core version of Microsoft Surface Book. Works flawlessly. The additional storage will appear as drive "E" and you can give it any name. The adapter sticks out a little, a fingernail is enough to pull it out. So it's not entirely flush, but it fits very well and goes well with the Surfacebook's design. I will try to attach some photos.
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