Electronics mounts
Breadboard-friendly 43.2 × 17.8 mm Nano with mini-USB; no mounting holes, held by its two 15-pin rows.
Solid Vibes StandardElectronics mounts
RP2040 / RP2350 Pico family: 51 × 21 mm, four ⌀2.1 holes 47 × 11.4 mm apart, micro-USB, optional headers.
Solid Vibes Standard