NETGEAR Orbi RBS50v2 3Gbps Wi-Fi Range Extender (RBS50) converted from RBR50v2
This is compatible with any Orbi from the 50s line, including RBR50, RBS50, RBK50, and RBK53 systems. 100% certain. This unit has 4gb internal storage, rather than just 512mb. It upgrades to the latest firmware.