Full Specifications and Features



Size & Weight

Dimensions (approx. W x H x D)
57.4 mm x 31.7 mm x 11.2 mm
Weights (approx.)

General Features

UHS-II / USB 3.1 Gen 1
Port Type
Standard A
LED Indicator
Supported OS
Windows 7 (SP1), Windows 8.1, Windows 10, OS X 10.9 or later


One of the fastest in its class

With the fast memory card reader MRW-S1, UHS-II SD cards like SF-G series can be read at a faster speed. Super-fast transfer compatibility lets you get the most of your high-speed cards. It also brings out the full performance of UHS-I and non-UHS SD memory cards.

Picture of UHS-II SD Memory Card Reader

Won't slow you down

The MRW-S1 card reader supports the SuperSpeed USB 3.1 Gen 1 interface to get the most from high-performance SF-G series cards. The result is that copying and backing-up files is far faster than through a conventional SD slot on your PC.

Back-ups that save time and space

Ideal for high-resolution still and 4K video back-ups from UHS-II SD cards, the MRW-S1 saves transfer time so you can get back to editing fast.

Always there when you need it

The pocket-sized design (57 x 31 x 11 mm, weight 20 g) lets you take this card reader anywhere.