The Quartz64 Model A is powered by a Rockchip RK3566 quad-core ARM Cortex A55 64-Bit Processor with a Mali G-52 GPU. It comes equipped with 2GB, 4GB or 8GB LPDDR4 system memory, and a 128Mb SPI boot flash. There is also an optional eMMC module (up to 128GB) and a microSD slot for booting.

So far I tried the following and worked out without issues:
– Installed Balena etcher in Ubuntu, a nice software to make bootable SD’s or eMMC
– Downloaded last version of Manjaro-arm for this board (at this moment: 0220606 release)
– Connected an external monitor using HDMI, an external wireless logitech Keyboard/Mouse, all recognized automatically by Manjaro
Additionally I wrote a post in Pine64 forum, since I want to know how to go further and test the Eink interface.
This is the result:
Curious to connect a LAN cable afterwards since this does not have WiFi and also trying out a WLAN USB to see if I can also use external WiFi.