Orbi RBR750

[Willys1994]

can I use TP link TL-SG108E 8-Port Gigabit Easy Smart Switch With my Orbi 750 Series Tri-Band WiFi 6 Mesh System, 4.2Gbps, Router + 1 Satellite? Would I be able use TP link TL-SG108E Management Utility User Interface and software features as well?

[FURRYe38]

If your wanting to connect the RBS to the RBR thru the switch via ethernet backhaul, it's recommended to use a NON-managed LAN switch for this and some managed switch can cause problems. 

https://kb.netgear.com/000051205/What-is-Ethernet-backhaul-and-how-do-I-set-it-up-on-my-Orbi-WiFi-Sy... 📡
https://kb.netgear.com/000061710/What-is-an-Ethernet-backhaul-connection-and-how-do-I-set-it-up-on-m...
NG GS-105/108v4 and GS308v3, D-Link DGS-105/108 and HP ProCurve 1400/1800 series switches work for Orbi systems. 

Otherwise, the switch you mentioned can work when connected behind the RBR. 

[Willys1994]

NETGEAR 8-Port Gigabit Ethernet Plus Switch (GS308E) - Desktop or Wall Mount, Home Network Hub, Office Ethernet Splitter, Silent Operation, Black
would work with my orbi RBR750?

[FURRYe38]

Yes.