In case said GSM card is a HAT and connects to GPIO40 header it will work on the Pi400 as well.
Nevertheless I would recommend buying SparkFun Qwiic pHAT Extension for Raspberry Pi 400 as that will simplify conneting the standard HAT to the Pi400
https://www.sparkfun.com/sparkfun-qwiic ... i-400.html
![Image]()
Nevertheless I would recommend buying SparkFun Qwiic pHAT Extension for Raspberry Pi 400 as that will simplify conneting the standard HAT to the Pi400
https://www.sparkfun.com/sparkfun-qwiic ... i-400.html
Statistics: Posted by aBUGSworstnightmare — Mon Dec 15, 2025 1:44 pm