This is boot.txt file

Disable the ACT LED.

dtparam=act_led_trigger=none dtparam=act_led_activelow=off

Disable the PWR LED.

dtparam=pwr_led_trigger=none dtparam=pwr_led_activelow=off

Disable ethernet port LEDs

dtparam=eth_led0=4 dtparam=eth_led1=4