Used and working TP-Link SG3210 8-port managed gigabit switch, 2 unshared SFP sockets with gigabit ethernet SFP modules installed, bringing the port count to 10. Fanless.

Including 850nm fibre SFP modules.

Manufacturer's support page is here ---https://www.tp-link.com/uk/support/download/tl-sg3210/v1/---