Question about Netgear MS60-100EUS Nighthawk mesh satellite

Unfortunately no, according to the manufacturer's page, the mesh satellite can only be used with the following systems:
"Works only with a Nighthawk Mesh WiFi 6 system (MK62 or MK63), sold separately."
https://www.netgear.de/home...
For the Nighthawk x8, however, you could use a normal repeater, which generates a separate network with its own name.