Question about Netgear Wifi repeater

[KAgantua]

Does this

NETGEAR Nighthawk X6 EX7700-100UKS WiFi Range Extender - AC 2200, Tri-band

need to be wired to the existing Router, or can it be connected by wi fi?

Thansk

[xeny]

via wifi

page 12 of https://www.downloads.netgear.com/files/GDC/EX7700...

[KAgantua]

Thanks