TP-Link 16-port gigabit switches support basic ethernet standards like IEEE 802.3i, IEEE 802.3u, and IEEE 802.3ab, with advanced models adding flow control, PoE, and VLAN protocols. Because TP-Link offers multiple 16-port gigabit models (such as unmanaged, easy smart, and fully managed versions), the exact protocol support depends on the specific hardware variant you have.