Waveshare Mini Base Board A for Raspberry Pi Compute Module 4, Base Board A For Raspberry Pi CM4

1. USB:
- USB 2.0 x 2
- USB 2.0 x 2 (via FFC connector)
2. GPIO: Raspberry Pi 40 PIN GPIO x 1
3. Header: M.2 slot x 1
4. HD media interface: HDMI x 2, 1x via FFC connector, support 4K 30fps output
5. DSI display: MIPI DSI x 1 (15pin 1.0mm FPC)
6. CSI camera: MIPI CSI-2 x 2 (15pin 1.0mm FPC)
7. Power input: 5V
8. FAN: 5V / 12V (no fan control)
9. RJ45 Ethernet: Gigabit Ethernet
10. CM4 slot: Suitable for all variants of Compute Module 4
11. SD card slot: MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
12. Size: 85.0 x 56.0mm