C3E-MB-PCB-V4 (also known as the ESP32-C3 Super Mini v4.0 ) is a popular, ultra-compact development board featuring the Espressif ESP32-C3FN4
If you are looking for "POST" information (Power-On Self-Test) because the board isn't starting: For the Multiplexer: c3e-mb-pcb-v4
Handles battery charging, fuel gauge, and system power distribution. RF Front End Transceiver for LTE/WCDMA/GSM bands. Connectivity QPA8685/6, QPA8675 C3E-MB-PCB-V4 (also known as the ESP32-C3 Super Mini v4
The is typically designed as a 4-layer board, though high-performance variants use 6 layers. Let’s break down the stack-up and power planes. c3e-mb-pcb-v4