4 Port Gigabit PoE Extender with IEEE 802.3bt Uplink Power
Amazon.com: 6 Port Full Gigabit PoE Switch, 4 Port PoE+ Gigabit Switch with 2 Gigabit Uplink Port, Total Power Budget 65W, 803. af/at Compliant, Rugged Metal Case, Work with IP Cameras VOIP
Cisco / CBS220-48T-4G / 48 Port Gigabit & 4 Port Gigabit SFP Smart Swi – Digital Dreams
Amazon.com: TRENDnet 4-Port Gigabit Switch with SFP Slot, TEG-S51SFP, 10 Gbps Switching Capacity, Fanless, 802.1p QoS, Rear Facing Ports, Metal Housing, Network Ethernet Switch, Lifetime Protection, Black : Electronics