A. Secure: Shows WPS (Wireless Protected Setup) is active.
B. WiFi: Shows WiFi is turned on and active.
C. Ethernet: Shows if a computer is connected via the rear Ethernet port(s)
D. Online: Shows active Internet connection.
E. Upstream: Shows traffic flowing from local computers out to the Internet.
F. Downstream: Shows incoming traffic from the Internet to local computers.
G. Power: Indicates powered on and working normally.