MikroTik RB260GS with 5 Gigabit ports and SFP cage, SwOS, plastic case, PSU

Mikrotik RB260GS (CSS106-5G-1S) small SOHO Switch 5x Gigabit Ethernet, one SFP cage powered by an Atheros Switch Chip, plastic case,

It gives you all the basic functionality for a managed switch, plus more: Allows to manage port-to-port forwarding, apply MAC filter, configure
VLANs, mirror traffic, apply bandwidth limitation and even adjust some MAC and IP header.