CM4-NANO-C Baseboard Nano Base Board (A) For Raspberry Pi Compute Module 5, Same Size As The Carte Base Raspberry Pi CM4 Raspberry Pi CM4 Wireless 2G RAM Lite (No eMMC) with Nano Base (A) Kit 【CONNECTOR】Raspberry Pi 40PIN GPIO header × 1 , 【USB】USB 2., 0 Type A port × 1 Base Board for Compute Module 4 Lite/eMMC Nano Base Board (C) for Raspberry Pi Compute Module 4, Same Size as the... 【Multiple Interfaces, Onboard 8MP Camera】Same Size As The CM4, Standard CM4 Socket, With Multiple Peripheral Interfaces Onboard 8MP Camera Module With 160°FOV To Meet Your Needs In The Application Otherwise, there may be problems such as automatic shutdown, frequency reduction, and so on., 6., The USB2., 0, CSI, and DSI interfaces are disabled by default and need to be enabled by the user., 7., The user key is connected to GPIO21 and pulled up to GPIO_VREF by R16 (10K). When the key is not pressed, GPIO21 is pulled high by default; when the key is pressed, the level of GPIO21 will be pulled down. Overview CM4-NANO-C (Raspberry Pi CM4 Ultra Mini Expansion Board Type B) is a baseboard that can be used with Raspberry Pi CM4., Although it is tiny, it can bring out the interface of Raspberry Pi CM4 with an onboard camera.