Asus RT-N66W - Manual (Page 29)

3.3 Using the Traffic Manager
3.3.1 Managing QoS (Quality of Service) Bandwidth
Quality of Service (QoS) allows you to set the bandwidth priority
and manage network traffic.
To set up bandwidth priority:
1. From the navigation panel, go to General > Traffic Manager >
QoS tab.
2. Click ON to enable QoS. Fill in the upload and download
bandwidth fields.
NOTE: Get the bandwidth information from your ISP.
3. Click Save.
NOTE: The User Specify Rule List is for advanced settings. If you want
to prioritize specific network applications and network services, select
User-defined QoS rules or User-defined Priority from the drop-down
list on the upper-right corner.