Hello @peppypeplink,
Outside of current range of Peplink SD-Switches, if we need a cost-effective switch that handles IEEE 802.1Q for small deployments (say, 4 or 5 ports), we have often sourced a NetGear Gigabit Plus Switch Series (GS105Ev2). Now, with the new Peplink InTouch, you can remotely administer these through the Peplink InControl2.
Happy to Help,
Marcus 