Features:
Suitable For Pi CM4 Evaluating Or Being Integrated Into End Products
Standard CM4 Socket, 40PIN GPIO, Gigabit Ethernet, USB2.0, DSI, CSI, 3.5mm Audio Jack All In The Compact Body Just As The Size Of CM4

Specifications:
Suitable for Compute Module 4
Networking: 1* Gigabit Ethernet RJ45 connector
Connector: 1* 40PIN GPIO header
USB: 1* USB 2.0 Type A connector
Display: 1* MIPI DSI port (15pin 1.0mm FPC connector)
Camera: 1* MIPI CSI-2 port (15pin 1.0mm FPC connector)
Video: 1* Mini HDTV port, supports 4K 30fps output
Audio: 3.5mm jack
Storage: Micro SD card socket for Compute Module 4 Lite (without eMMC) variants HDTV
Power Input: 5V
Dimensions: 56 × 41mm

Package includes:
1 * Expanding Board
1 * 40PIN GPIO

Note: the CM4 is NOT included. Please buy it separately if necessary.