The USB-C port only transfers data according to the USB 2.0 standard. The speed of the reader is sufficient in our benchmarks. A microSD slot can be used to significantly expand the space for e-books and files. With 64 GB UFS 2.1 flash and 4 GB RAM, the Onyx Boox Note Air 3 C is not a memory giant but is adequately equipped compared to other e-ink tablets.
We like the build quality, only the transition from the display glass to the chassis is a little rough. The wide edge on one side allows the tablet to be held comfortably, and the display edges as a whole are well-dimensioned so that the tablet is easy to use but still looks modern. The screen is protected by special Onyx Glass, which is extra-thin and lightly etched to protect the screen, while at the same time enabling a flat front of the housing and reducing reflections. In terms of weight, however, at 430 grams it is significantly heavier than the comparable devices. Onyx Boox packs its e-ink tablet into a slim chassis made of a magnesium-aluminum alloy.
