1. CM4 socket: Suitable for all variants of Compute Module 4
2. Networking: Gigabit Ethernet RJ45 connector, 100M Ethernet RJ45 connector
3. Connetor: Isolated RS485 x 4, Power screw terminal x 1
4. USB: USB 2.0 Type A x 2
5. Cacmera: MIPI CSI-2 port x 2 (15pin 1.0mm FPC connector)
6. Video: HDMI port x 1, supports 4K 30fps output
7. RTC: Real-time clock with battery socket and ability to wake Compute Module 4
8. Storage: MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
9. Fan header: Allows speed adjustment, 5V
10. Indicator: Power indicator x 1, CM4 status indicator x 1, User LED x 2, RS485 communication indicator x 8
11. Power input: 7-36V
12. Dimension: 93.6 x 108.8mm
