Rate Limit 
Go to Configuration > Wireless > Rate Limit to limit downstream and upstream rate of SSIDs. 
 
Radio 
Wireless Radio 
Select the desired radio from the list. 
Radio 1 is for 2.4GHz, and Radio 2 is for 5GHz. 
Rate Limit 
SSID 
The index of SSID. 
SSID Name 
The name of the SSID. 
Upstream 
Rate 
Enter a maximum upstream rate for the SSID. The range is 
from 0 to 400 Mbps for Radio 1 and from 0 to 1000 Mbps 
for Radio 2; 0 means no limitation. 
Downstream 
Rate 
Enter a maximum downstream rate for the SSID. The range 
is from 0 to 400 Mbps for Radio 1 and from 0 to 1000 
Mbps for Radio 2; 0 means no limitation. 
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