# LEDs and buttons The QCC74xM EVK includes LEDs and buttons that are essential for monitoring device state and performing key hardware-level operations. - PWR LED (Red): Indicates that the EVK is receiving power. - VDD33 LED (Green): Confirms that the buck and LDO are successfully converting the 5 V input to a stable 3.3 V supply (VDD33). - **RESET** (right) button: Used to reset or power-cycle the module. - **BOOT** (left) button: Used in combination with the **RESET** button to enter UART boot mode for firmware flashing. Last Published: May 06, 2026 [Previous Topic Board layout and jumper settings](https://docs.qualcomm.com/bundle/publicresource/80-WL740-251/topics/board-jumpers.md) [Next Topic Peripheral and sensor interfaces](https://docs.qualcomm.com/bundle/publicresource/80-WL740-251/topics/peripherals.md)