TP-Link TL-ER604W manual Description, Ssid Broadcast, AP Isolation, Security

SSID:	Enter a name for the wireless network. The same name of SSID(Service
	Set Identification) must be assigned to all wireless device in your network.
	Considering your wireless network security, the default SSID is set to be
	TP-LINK_XXXXXX (XXXXXX indicates the last unique six numbers of each
	Router’s MAC address). This value is case-sensitive. For example, TEST is
	NOT the same as test.
Description:	Enter the description for the SSID.
SSID Broadcast:	Enable or disable the SSID Broadcast. When wireless clients survey the
	local area for wireless networks to associate with, they will detect the SSID
	broadcast by the Router. If the SSID Broadcast is enabled, the Wireless
	Router will broadcast its name (SSID) on the air.
AP Isolation	Enable or disable the AP Isolation. This function can isolate wireless
	stations on your network from each other. Wireless devices will be able to
	communicate with the Router but not with each other.
Security:	Specify the security option of the wireless network. If you do not want to use
	wireless security, select “Disable Security”, otherwise select one Security
	option from the drop-down list. It’s strongly recommended to choose one of
	the security options to enable security.
	There are three wireless security options supported by the Router:
	WPA-PSK/WPA2-PSK, WPA/WPA2 and WEP. It is recommend to choose
	WPA-PSK/WPA2-PSK.
	The detail information of the three security options will be introduced below.

1)WPA-PSK/WPA2-PSK

It’s the WPA/WPA2 authentication type based on pre-shared passphrase. The default security option of the router is WPA-PSK/WPA2-PSK.

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