TP-Link TL-WR841N User Manual page 14

2) Use the WPS/RESET button: With the Router powered on, press and hold the
WPS/RESET button (more than 5 seconds) until the SYS LED becomes quick-flash from
slow-flash. Then release the button and wait the Router to reboot to its factory default
settings.
 Used as WPS button:
If you have client devices, such as wireless adapters, that support Wi-Fi Protected Setup,
then you can press this button to quickly establish a connection between the Router and
client devices and automatically configure wireless security for your wireless network.
WIFI ON/OFF: This switch is used to enable/disable the Router's wireless function.

Wireless antenna: To receive and transmit the wireless data.

TL-WR841N/TL-WR841ND
-6-
300Mbps Wireless N Router