BV-Tech 6 Port PoE+ Switch
If you have an office with POE-powered VOIP phones, this switch is the ideal one to split existing ethernet lines, and provide power to the phone. With one high-powered POE port (ideal for more power-hungry phones), 3 regular POE ports, and two ethernet uplink ports, it checks off everything you need.
(It’s unfortunately that, as much as Amazon wants us to use these affiliate links, Amazon equally defiantly prevents these links to be embedded or to generate previews … because, after all, why actually provide practical functionality? There’s a plugin, or some other hack that I’ll need to find.)