Edimax AR-7288WnA Manual page 58

Select Enable QoS to enable QoS and configure the default DSCP mark.
In this page, enable the QoS function and select the default DSCP mark.
After setting, click Apply/Save to save and apply the settings.
Note:
If the Enable QoS checkbox is not selected, all QoS will be disabled for
all interfaces. The default DSCP mark is used to mark all egress packets
that do not match any classification rules.
Queue Classification
Choose Advanced Setup > Quality of Service > QoS Classification and the
following page appears.
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