Edimax Technology WP-S1300 - Manual (Page 68)

‘Enable’.
WMM The short of Wi-Fi MultiMedia, it will enhance the data
transfer performance of multimedia contents when
they‟re being transferred over wireless network. If you
don’t know what it is / not sure if you need it, it’s
safe to set this option to ‘Enable’, however, default
value is ‘Disable’.
When you finish, please click „Apply‟ button to save changes you made; to
discard changes, click „Cancel‟ button. If you click „Apply‟, you‟ll see the
following message:
Click „Continue‟ to continue on projector server setting, or click „Apply‟ to
reboot projector server, and changes you made will take effect after projector
server rebooted.