Espressif ESP32-DevKitM-1 - Page 3

ESP32-DevKitM-1 - front
Key Component
Description
On-board module
ESP32-MINI-1 module or ESP32-MINI-1U module. ESP32-MINI-1
comes with an on-board PCB antenna. ESP32-MINI-1U comes with
an external antenna connector. The two modules both have a 4 MB
flash in chip package. For details, please see ESP32-MINI-1 &
ESP32-MINI-1U Datasheet.
5 V to 3.3 V LDO
Power regulator converts 5 V to 3.3 V.
Boot Button
Download button. Holding down Boot and then
pressing Reset initiates Firmware Download mode for downloading
firmware through the serial port.
Reset Button
Reset Button
Micro-USB Port
USB interface. Power supply for the board as well as the
communication interface between a computer and the ESP32 chip.
USB-to-UART
Bridge
Single USB-UART bridge chip provides transfer rates up to 3 Mbps.