If you're lucky enough to have a Compute Module 4 lying around and you would prefer the Raspberry Pi 4 format - this board is for you! This adapter board accepts your Raspberry Pi Compute Module 4 and converts it to the Raspberry Pi 4 format (along with a few perks) - 2x MicroHDMI, 1x USB-C, 4x USB 3.0, full 40-pin colour-coded GPIO header, Gigabit Ethernet, PoE header, CSI/DSI ports, Micro-SD slot, fan header and a boot selection switch. We're really digging the 4x USB 3.0 ports and the option to use a CM4 with onboard storage to avoid the use of a MicroSD card - and that 5V fan header will be dead handy too. A product wiki is on hand to help with a few setup considerations, but other than that it's good to go. CM4 is not included. Adapt them all! We have a few other options in the store if you're into this CM4 adapting life: * CM4 to 3B adapter * CM4 to CM3 adapter Features * Onboard standard CM4 connector, support access to CM4 Lite / eMMc series * Easily compatible with the interfaces of Raspberry Pi 4 B board * 4x USB 3.0 ports, compatible with USB 2.0 / 1.1 transmission * RJ45 Gigabit Ethernet port, 10 / 100 / 1000 M adaptive * PoE header, for connecting PoE HATs * Colour-coded GPIO header * Boot selection switch * 2x micro-HDMI * USB-C for power supply (can be used as the USB SLAVE interface for programming images) * CSI port for Raspberry Pi Camera Module * DSI port for Raspberry Pi Touch Display 2 * Fan header * MicroSD slot Onboard Features No. Name Description 1 CM4 socket For all variants of Compute Module 4 2 40-pin GPIO header For connecting to all HATs 3 PoE Support access to PoE HAT 4 Gigabit Ethernet port Supports 10 / 100 / 1000M network 5,6 USB3.0 interface 4x USB3.0 interface, support USB devices 7 FAN header For 5V fan. Does not support speed regulation 8 HDMI interface 2 x Micro HDMI interface, supports 4K 30fps output 9 USB Type C 5V/2.5A power supply Can also be used for eMMC programming 10 LED indicator Indicating the working status of the Raspberry Pi 11 BOOT ONCM4 USB Type C booting guide OFF： eMMC or SD card boot guide 12 CAM interface MIPI CSI interface 13 Micro SD card slot Only for the Lite CM4 usage 14 DISP1 interface MIPI DSI interface, DISP1 interface 15 IO-VREF selection CM4 IO logic voltage switch 3.3V or 1.8V 16 Function pin RUN: CM4 running status pin GL-EN: Power supply enable pin 17 System function switch BTDIS: Bluetooth disabled, for CM4 with antenna WiFiDIS: WiFi disabled, for CM4 with antenna WPDIS: EEPROM write protection Resources * Product wiki Package Contents * 1x CM4 to Pi4 Adapter * 1x Screws pack (attached to the board) CM4 is not included https://elecena.pl/product/22728210/cm4-to-4b-adapter 2023-03-07 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2023-12-27 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2024-09-18 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2024-11-29 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2024-11-30 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2025-08-06 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2025-09-27 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2025-11-28 https://elecena.pl/product/22728210/cm4-to-4b-adapter 2025-11-29