Vivid Unit is a low-profile Rockchip RK3399 SBC with an integrated touchscreen display
The Vivid Unit SBC ships with a touchscreen display, two braces, and M3 screws and standoffs. Few new products ship with the Rockchip RK3399 as it has been displaced by the newer Rockchip RK3568 or RK3588 processors, but it does benefit from a mature software stack which I initially assumed may be why UUGear selected the SoC for their new product.
They offer two OS images for the Vivid Unit: Debian 11 and Debian 11 with RetroPie preinstalled, so it’s not the latest Debian 12. The low-level software has been uploaded on GitHub, and what we have there is Linux 5.10.110 and u-boot 2017.09, so not exactly mainline stuff… Two more repositories are available for the Vivid Unit for the VGP GPIO CLI/GUI utility and the VSA screen assistant. You’ll find some more documentation on the product page.