aiming for cheap internet and communications ~25€, 35€ and 40€ 16GB storage + nanoSIM slot that can be added to the case one + extra microSD slot to get up to 144GB with RESD TCM have an M.2 slot (so up to 1144GB of storage) WCM have no M.2 microSD nor RESD slot strong points : extra draw (nano SIM and microSD) + price
what is WCM, PCM and TCM ? Custom Motherboards (form factor idea)