Installing an M.2 4G expansion board.
For those seeking 4G/LTE cellular connectivity, consider purchasing and installing an M.2 4G Expansion Board. The configuration consists of two distinct scenarios: one with a WiFi card installed, while the other does not. In both scenarios, it’s essential to add a hex standoff for proper support of the 4G expansion card.
Installing an M.2 4G expansion board.
The expansion card connects to the GPIO pins interface using a 4-pin header but needs extra support during assembly. To achieve this, you should extend the screw height with a hex standoff from the screw pack included with the card. As shown in the photos below, the expansion card is essentially assembled above the WiFi card, right next to our 1TB NVMe SSD we previously installed.
