Amazon.com: PoE Texas 4 Port PoE Injector - Gigabit Passive Power Over Ethernet with 48V 48W UL Power Supply - 802.3af PoE Injector for VoiP Phones, WiFi Access Points, IP Cameras -
Amazon.com: PoE Texas 4 Port PoE/PoE+ Injector with 48V 60W Power Supply - Gigabit Injector - Active Mode A Power Over Ethernet Multi Port PoE Adapter - Supports 4 PoE (802.3af or