Adafruit Metro Mini 328 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/adafruit-metro-mini-328/  (CC BY 4.0)
Basis: Adafruit's Eagle board file (Rev B) and the V2 product page
Catalog version: 2026-10-20

Overall (mm): length 43.18, width 17.78, height 4.9
Mounting holes: 4 × Ø2.2 mm, pattern 39.1–39.4 x 13.97 (asymmetric, see notes), screw M2
- Board file outline 43.18 × 17.78 mm; the V2 product page gives 44.3 × 17.8 × 4.9 mm overall.
- Four 2.2 mm holes from the board file (origin bottom-left): (1.905, 1.905), (1.905, 15.875), (41.021, 1.905), (41.275, 15.875).
- Headers on 2.54 mm pitch, rows 15.24 mm (0.6 in) apart: breadboard friendly. Rev B has micro-USB, V2 USB-C.

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Adafruit (official): Adafruit METRO 328 PCB (Eagle files) — BRD, SCH — Adafruit open hardware — https://github.com/adafruit/Adafruit-METRO-328-PCB
- Adafruit (official): Metro Mini 328 V2 product page — web — Manufacturer documentation — https://www.adafruit.com/product/5597

Xem Studio scan: not planned; the official CAD above covers it.
API: https://xemstudio.com/api/geometry?object=adafruit-metro-mini-328