But not just any SD card slot.

These will be ultra-fast UHS-II card readers, which are around three times faster than regular SD readers.

Weve already seenplenty of rumorsthat the SD card reader was making a comeback, includingleaked schematicsfrom Apple.

2016 MacBook Pro

Apple

Speed

SD cards are rated by their data transfer speeds, both for reading and writing data.

UHS-II can transfer data at up to 312MB/sec,three times fasterthan UHS Is maximum 104MB/sec.

This matters in two places.

When recording the images to the card, this added speed can be crucial.

“High-resolution photos and video are some of the largest files around.

And cards arent just for photos and video.

Many audio devices record to SD cards, although audio doesnt need anywhere near the bandwidth of video.

And it’s possible for you to also just use an SD card for plain old storage.

The added speed of UHS-II makes this a lot more practical, if also more expensive.

Yes, at these speeds, the quality of your USB cable can make a difference.

Downsides

This speed comes at a price, though.

At these prices, SD cards are in external SSD territory, and even more expensive.

You must also consider compatibility.

Its no use buying a fast card if your camera cant use it.

Its just wasted money.

The same card will likely be much cheaper when you’re free to actually make use of it.

As a rule of thumb, only cameras focused on high-end video capture will have UHS-II compatibility.

But far more exciting is the SD card reader itself.

Just having one built-in, regardless of speed ratings, is a boon.