Old, but works fine. It comes up as a separate network (the same name as your router, but with the suffix 'EXT'), so you need to tell your devices to connect to it automatically when available.
Setup instructions here: https://www.downloads.netgear.com/files/GDC/EX6120/EX6120_EN_QSG_18May2015.pdf
NetGear AC1200 EX6120 WiFi Range Extender (Woodlands TW7)
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