@Suhailjr But I think since it's not a plug and plug play system and it will laying on the PCB for the long term, it might be fine. for me, it's similar to the Intel Edison and the PICO-IMX7 System-on-Module
@salmanfaris at last they update their design. T
What you think on the updated connector. I felt like its more fragile and high chance for corottion issue due to humidity for long term use.
Built on the same 64-bit quad-core BCM2711 application processor as Raspberry Pi 4, Compute Module 4 delivers a step-change in performance over its predecessors: faster CPU cores, better multimedia, more interfacing capabilities, and, for the first time, a choice of RAM densities and a wireless connectivity option.
You can find detailed specs here,1.5GHz quad-core 64-bit ARM Cortex-A72 CPU VideoCore VI graphics, supporting OpenGL ES 3.x 4Kp60 hardware decode of H.265 (HEVC) video 1080p60 hardware decode, and 1080p30 hardware encode of H.264 (AVC) video Dual HDMI interfaces, at resolutions up to 4K Single-lane PCI Express 2.0 interface Dual MIPI DSI display, and dual MIPI CSI-2 camera interfaces 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM Optional 8GB, 16GB or 32GB eMMC Flash storage Optional 2.4GHz and 5GHz IEEE 802.11b/g/n/ac wireless LAN and Bluetooth 5.0 Gigabit Ethernet PHY with IEEE 1588 support 28 GPIO pins, with up to 6 × UART, 6 × I2C and 5 × SPI
Compute Module 4 IO Board
The IO board provides:Two full-size HDMI ports Gigabit Ethernet jack Two USB 2.0 ports MicroSD card socket (only for use with Lite, no-eMMC Compute Module 4 variants) PCI Express Gen 2 x1 socket HAT footprint with 40-pin GPIO connector and PoE header 12V input via barrel jack (supports up to 26V if PCIe unused) Camera and display FPC connectors Real-time clock with battery backup
This link has even more extensive ways to do it
The way that I've seen most people do it (have a look on the Raspberry Pi forums), and have done myself with success is using /etc/rc.local.
All you need to do here is put ./myscript in the rc.local text file. If it's in python, put python myscript.py.
This literally is "a simple solution, (like dropping my script in some "startup" directory or something similar)"- maybe search on the forums when you're having questions as well, this solution came up on the first 4 results of a google search!