The PoE extender/switch operates without local power when powered via the Uplink port using PoE input. It also supports DC power input: 12V–57V via a 5.5×2.1mm DC port. It complies with IEEE 802.3bt (PoE++), supporting up to 90W input power and delivering up to 72W total PoE output across LAN1–LAN4. LAN1–LAN4 support IEEE 802.3at (PoE+) output. In Ext mode, maximum cable length is 250 meters at 10 Mbps; in LAN mode, maximum cable length is 100 meters at 1000 Mbps. The device automatically detects connected devices and provides protection against PoE-related damage. It supports IEEE 802.3af/at/bt Power over Ethernet standards. All five ports (1 Uplink + 4 LAN) support 10/100/1000BASE-TX. The Uplink port accepts PoE input (802.3bt/at/af compliant); LAN1–LAN4 provide PoE output (802.3at/af compliant). PoE extenders enable transmission distances of 100–250 meters over Cat5e/Cat6 UTP cables, increasing deployment flexibility. When DC input voltage is below 40V, PoE output on LAN1–LAN4 is disabled. For full PoE functionality, use a 48V–57V DC power supply. Note: In Ext mode, maximum bandwidth per LAN1–LAN4 port is 10 Mbps. Verify your IP camera’s bit rate settings—recommended maximum is 8 Mbps (8192 Kbps). The device accepts DC power via a 5.5×2.1mm barrel connector (center-positive). It supports passive 48V–57V DC input. Total PoE input power capacity: 90W.