Chapter 9 Wireless
AX/DX/EX/PX Series User’s Guide
253
Figure 114   Network Setting > Wireless > WMM
Note: WMM cannot be disabled if 802.11 mode includes 802.11n or 802.11ac.
Note: APSD only affects SSID1. For SSID2-SSID4, APSD is always enabled.
Note: This screen is not available when MPro Mesh is enabled in the Network Setting > Wireless 
> MESH screen.
The following table describes the labels in this screen.
Table 63   Network Setting > Wireless > WMM
LABEL DESCRIPTION
Band Select a 2.4GHz and 5GHz frequency band to enable or disable the WMM of SSID of the 
selected band.
WMM of SSID Select On to have the Zyxel Device automatically give the 
WiFi network (SSIDx) a priority level 
according to the ToS value in the IP header of packets it sends. WMM QoS (
WiFi MultiMedia 
Quality of Service) gives high priority to video, which makes them run more smoothly.
SSID1 is the General WiFi SSID; SSID2-SSID4 are the Guest WiFi SSIDs.
If the 802.11 Mode in Network Setting > Wireless > Others is set to include 802.11n or 802.11ac, 
WMM cannot be disabled.
WMM 
Automatic 
Power Save 
Delivery (APSD)
Select this option to extend the battery life of your mobile devices (especially useful for small 
devices that are running multimedia applications). The Zyxel Device goes to sleep mode to save 
power when it is not transmitting data. The AP buffers the packets sent to the Zyxel Device until 
the Zyxel Device "wakes up." The Zyxel Device wakes up periodically to check for incoming 
data.
Note: This works only if the WiFi device to which the Zyxel Device is connected also 
supports this feature.
Cancel Click Cancel to restore your previously saved settings.
Apply Click Apply to save your changes.