The display of choice is the KeDei LCD 3.5″ module which was originally intended for use with a Raspberry Pi.

Raspberry Pi向けの3.5インチタッチスクリーンディスプレイ。販売元はスイッチサイエンスで、店頭価格は税抜き4,830円（税込5,216円）。

The new Raspberry Pi PiTFT is equipped with a 3.5? display offering a resolution of 480×320 16-bit colour pixels and comes with a resistive touch overlay so is slightly larger than the popular ...

The EDATECH ED-IPC3020 is a tiny fanless computer that measures 102.8 x 89.5 x 32.5mm (4″ x 3.5″ x 1.3″) and which features support for up to two 4K displays, Gigabit Ethernet, WiFi 5 and ...

Radxa’s board has four SATA interfaces plus an eSATA connector, allowing you to connect 2.5 inch or 3.5 inch drives to a Raspberry Pi (or other supported single-board computers).