Microsoft's Surface Book 2 is a powerful laptop with a modular design, a touch display available in two sizes, and a high price. One way to save a bit of money at checkout is to dial back the size of your solid-state drive (SSD). To add more storage after purchase, you can use a standard SD card, but it will stick out and run the risk of being damaged during everyday use. However, a special adapter allows you to tidily fit a microSD card into the Surface Book 2 without any risk of damage.

Products Used In This Guide

How to add storage to your Surface Book on the cheap

The BASEQI microSD adapter sits flush along the edge of your Surface Book 2, and there are sizes to fit either 13.5- or 15-inch configurations. Here's how to get everything set up.

  1. Slide the microSD card into the BASEQI adapter.

  2. Slide the card and adapter into the SD slot on the side of your Surface Book 2. It should sit flush against the edge of your laptop.

Before you remove the microSD card and adapter from the Surface Book 2, ensure you eject it properly to avoid corruption or data loss.

  1. Click the Show hidden icons button on your Surface Book 2.
  2. Click the Safely Remove Hardware and Eject Media button.
  3. Click Eject SDXC.

You now know how to add and remove additional storage from your Surface Book 2.

Our top equipment picks

Unfortunately, the BASEQI adapter cannot take advantage of the UHS-II bus in the Surface Book 2, so it's recommended to stick with a UHS-I microSD card. Here's the gear we recommend for these steps.

Storage

SanDisk Ultra 200GB microSD card

Fast and reliable.

This UHS-I microSD card offers read speeds up to 100 MB/s and is reliable. You can also get quite a bit of storage for cheap.

There are a number of size options to choose from when checking out — up to 400GB for about $153 — but the best value seems to be from the 200GB card, which costs about $49. You're not needlessly paying for UHS-II speeds, and the 100 MB/s transfer rate here is good enough for everyday usage without running the risk of snapping off a full-sized SD card.

Adapter

BASEQI microSD adapter

For a flush fit.

This adapter is made specifically for both sizes of the Surface Book 2, and will even work with the older Surface Book and Surface Book with Performance Base.

Without this $23 accessory, you'll be stuck with added storage that sticks out the side of your Surface Book 2. This adapter offers a flush fit along the edge of your laptop reducing the risk of damage, plus it simply looks way better if you plan on keeping the additional storage in your Surface Book 2 at all times.

Additional Equipment

There are some other options out there for anyone who wants something a bit different.

Silicon Power 128GB microSD card ($26 at Amazon)

It has less storage at 128GB and it's a bit slower with a read speed up to 75 MB/s, but it's also about $23 cheaper than our main pick. If you want cheap, reliable storage, this is it.

Delkin 128GB microSD card ($150 at Amazon)

This 128GB UHS-II microSD card from Delkin comes with a standard SD UHS-II adapter, so if you'd like to occasionally benefit from higher speeds — we got about 224 MB/s read speeds with the UHS-II adapter — while also retaining the ability to pop it into the BASEQI adapter for UHS-I speeds and a flush fit, check this one out.

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