Upgraded USB-C interface Power button for /OFF power cycling Reverse polarity protection Over-voltage protection Switchable power supply between 3.3 and 5V Standard 2.54mm pins RM-CRSF JST- port for simple plug-n-play connection with ER series receivers Pin sockets included cables for convenient testing Using regular 2.54mm pin output (Servo plugs): ER3C-i 2.4GHz ELRS PWM Receiver ER5C-i 2.4GHz ELRS PWM Receiver ER4 2.4GHz ELRS PWM Receiver ER5A 2.4GHz PWM Receiver ER5A V2 2.4GHz PWM Receiver ER5C 2.4GHz PWM Receiver ER5C V2 ELRS PWM Receiver ER6G & ER6GV ELRS PWM Receiver Colour:Photo Color Material:plastic Package Contents: 1 x Flashing Dongle Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.