SunFounder Pironman
6.3.3 About the Length
M.2 modules come in different sizes and can also be utilized for Wi-Fi, WWAN, Bluetooth, GPS, and NFC.
Pironman 5 supports four (PCIE2.0 / PCIE 3.0) NVME M.2 SSD sizes based on their names: 2230, 2242, 2260, and
2280. The “22” is the width in millimeters (mm), and the two following numbers are the length. The longer the drive,
the more NAND flash chips can be mounted; therefore, the more capacity.
6.3. Pi5 NVMe PIP 51