rockpi 4A is $39 and has an m.2 slot https://shop.allnetchina.cn/collections/frontpage/products/rock-pi-4-model-a-board-only-no-wlan-bluetooth-poe https://shop

rockpi 4A is $39 and has an m.2 slot https://shop.allnetchina.cn/collections/frontpage/products/rock-pi-4-model-a-board-only-no-wlan-bluetooth-poe https://shop.allnetchina.cn/collections/frontpage/products/r...