Top View - D-Link DIR-457U User Manual

Section 1 - Product Overview
3G Signal LED
A RED light indicates poor
signal strength.
GREEN
A light indicates
normal signal strength.
A BLUE light indicates
excellent signal strength.
A Blinking 3G Signal LED
indicates 3G activity.
USB Connection
Connect either the USB power cable
or USB power adapter to charge the
battery.
D-Link DIR-457U User Manual
Hardware Overview

Top View

Power LED
Device not plugged into a USB port:
A steady RED light indicates A SIM card error
or no service.
A blinking RED light indicates the battery is
low.
GREEN
A steady light indicates 2G Wireless
service.
A steady BLUE light indicates 3G service,
Device plugged into a USB port:
A blinking RED light indicates the battery is
charging when powered off.
A blinking RED/GREEN/BLUE
the battery is charging when powered on.
light indicates
5