That's probably normal; the ER-Lite doesn't have a separate Power on LED, like the EdgeRouter Pro 8 does.
In the ER-Lite, the Green LED on the Console port indicates power is On.
On the EdgeRouter Pro 8, the Power LED on the right indicates power is On.
In the ER-Lite, the Green LED on the Console port indicates power is On.
On the EdgeRouter Pro 8, the Power LED on the right indicates power is On.