$60 Raspberry Pi Mini Tower NAS kit takes one M.2 SATA SSD
52Pi appears to have noticed and liked the design, as they created something similar with the Raspberry Pi Mini Tower NAS kit taking one M.2 SATA SSD instead of using the UPS module. There are also a few tweaks to the mechanical design with the OLED display at an angle for easier reading.
There’s also a user manual, but some people complained it’s not detailed enough. You’ll also find installation instructions on the Wiki, where we also learn that 2.4GHz WiFi may not work that well with the kit, so using 5GHz is recommended (But it looks to be a copy/paste from another section of the Wiki for a metal case…).