The ASRock Mars RPL line of computers are small desktop PCs that measure 194 x 150 x 26mm (7.64'' x 5.91'' x 1.02'') and have an internal volume of 0.7 liters.
Available with either a 12th-gen Intel Celeron 7305 Alder Lake or 13th-gen Core i5-1335U Raptor Lake processor, the little computers may not have the latest Intel chips. But it's still a pretty versatile little PC with support for up to 96GB of RAM, two M.2 slots for storage, and support for up to four displays.
There's also an M.2 2230 slot for a wireless card. It's populated by an Intel AX210 WiFi 6E & Bluetooth 5.3 module by default. And the system has a fan for active cooling.