CM4 will be stacked at a 1.5mm height

Standard 40pin connector

Optional jumper (2.54mm pitch, see pin configurations)

ESD protected, Power over Ethernet (PoE) capabilities through the official Raspberry Pi PoE HAT. If using this HAT, we recommend using 10mm, M2.5 spacers, and covering the transformer with electrical tape for added protection. Using this HAT, the board will be compatible with 802.3af PoE networks. The CM4 will also enjoy a little breeze from the included fan. A higher current than 2.5A is advised for all peripherals.

Stacked USB 2.0 connectors, 1.5A current limit for all USB ports

Littelfuse, 3.5A, NANO2 (045303.5MR, or similar)

Red power LED, green flashing activity LED

2.1mm inside, 5.5mm outside diameter. Outer connection is ground, inner conductor is positive voltage.

Standard 2 positions, 3.5mm pitch

No external AC/DC power supply provided. 24W is the minimum recommended power. An example could be ACM24US12 from XP Power.

Intended as power output (supply for connected HATs). Can be used as input but caution is advised as it is located after the reverse polarity protection.

Standard Raspberry Pi connections, 22pin, 0.5mm pitch

ESD protected, current limit protection

Depending on whether a USB line is needed for the M.2 port, a single or double (stacked) connector can be mounted. The USB line can be deviated through two 0402 jumpers.

ESD protected. When plugged, the board will switch to USB slave (connected USB devices will stop functioning). The USB C can power the Raspberry Pi for programming purposes. Power limitations can occur with peripherals due to the maximum current of 3A for USB-C.

Card slot for CM4 modules without eMMC. Push-push type connector.

For use with compatible M.2 modules. Push-push type connector.

The 2242 B key slot enables the use of SSDs, often with B+M key configuration, as well as network modules, which can then use the onboard micro SIM card. 1.5mm base height for the connected module. Network cards are more often available as 3042 format, which is also compatible. An adapter can be purchased separately to connect up to 2280 M key NVMe SSDs.

CM4 will be stacked at a 1.5mm height

Standard 40pin connector

Optional jumper (2.54mm pitch, see pin configurations)

ESD protected, Power over Ethernet (PoE) capabilities through the official Raspberry Pi PoE HAT. If using this HAT, we recommend using 10mm, M2.5 spacers, and covering the transformer with electrical tape for added protection. Using this HAT, the board will be compatible with 802.3af PoE networks. The CM4 will also enjoy a little breeze from the included fan. A higher current than 2.5A is advised for all peripherals.

Stacked USB 2.0 connectors, 1.5A current limit for all USB ports

Littelfuse, 3.5A, NANO2 (045303.5MR, or similar)

Red power LED, green flashing activity LED

2.1mm inside, 5.5mm outside diameter. Outer connection is ground, inner conductor is positive voltage.

Standard 2 positions, 3.5mm pitch

No external AC/DC power supply provided. 24W is the minimum recommended power. An example could be ACM24US12 from XP Power.

Intended as power output (supply for connected HATs). Can be used as input but caution is advised as it is located after the reverse polarity protection.

Standard Raspberry Pi connections, 22pin, 0.5mm pitch

ESD protected, current limit protection

Depending on whether a USB line is needed for the M.2 port, a single or double (stacked) connector can be mounted. The USB line can be deviated through two 0402 jumpers.

ESD protected. When plugged, the board will switch to USB slave (connected USB devices will stop functioning). The USB C can power the Raspberry Pi for programming purposes. Power limitations can occur with peripherals due to the maximum current of 3A for USB-C.

Card slot for CM4 modules without eMMC. Push-push type connector.

For use with compatible M.2 modules. Push-push type connector.

The 2242 B key slot enables the use of SSDs, often with B+M key configuration, as well as network modules, which can then use the onboard micro SIM card. 1.5mm base height for the connected module. Network cards are more often available as 3042 format, which is also compatible. An adapter can be purchased separately to connect up to 2280 M key NVMe SSDs.

CM4 will be stacked at a 1.5mm height

Standard 40pin connector

Optional jumper (2.54mm pitch, see pin configurations)

ESD protected, Power over Ethernet (PoE) capabilities through the official Raspberry Pi PoE HAT. If using this HAT, we recommend using 10mm, M2.5 spacers, and covering the transformer with electrical tape for added protection. Using this HAT, the board will be compatible with 802.3af PoE networks. The CM4 will also enjoy a little breeze from the included fan. A higher current than 2.5A is advised for all peripherals.

Stacked USB 2.0 connectors, 1.5A current limit for all USB ports

Littelfuse, 3.5A, NANO2 (045303.5MR, or similar)

Red power LED, green flashing activity LED

2.1mm inside, 5.5mm outside diameter. Outer connection is ground, inner conductor is positive voltage.

Standard 2 positions, 3.5mm pitch

No external AC/DC power supply provided. 24W is the minimum recommended power. An example could be ACM24US12 from XP Power.

Intended as power output (supply for connected HATs). Can be used as input but caution is advised as it is located after the reverse polarity protection.

Standard Raspberry Pi connections, 22pin, 0.5mm pitch

ESD protected, current limit protection

Depending on whether a USB line is needed for the M.2 port, a single or double (stacked) connector can be mounted. The USB line can be deviated through two 0402 jumpers.

ESD protected. When plugged, the board will switch to USB slave (connected USB devices will stop functioning). The USB C can power the Raspberry Pi for programming purposes. Power limitations can occur with peripherals due to the maximum current of 3A for USB-C.

Card slot for CM4 modules without eMMC. Push-push type connector.

For use with compatible M.2 modules. Push-push type connector.

The 2242 B key slot enables the use of SSDs, often with B+M key configuration, as well as network modules, which can then use the onboard micro SIM card. 1.5mm base height for the connected module. Network cards are more often available as 3042 format, which is also compatible. An adapter can be purchased separately to connect up to 2280 M key NVMe SSDs.