Will come with different power supply, (15V), but works fine unless you need to power all 8 PoE ports then you will need to up your voltage. Customer service is our goal! Additional Details ------------------------------ Product description: Technical Information: Network Ports: 16 auto speed-sensing 10/100 RJ-45 ports Network Protocol and Standards: IEEE 802.3i 10BASE-T IEEE 802.3u 100BASE-TX IEEE 802.3x Flow Control IEEE 802.3af DTE Power via MDI Performance Specifications: Forwarding modes: Store-and-forward Bandwidth: 3.2 Gbps Network latency: Less than 20 ?s for 64-byte frames in store-and-forward mode for100 Mbps to 100 Mbps transmission Buffer memory: 96 KB embedded memory per unit Address database size: 1,000 media access Addressing: 48-bit MAC address Mean Time Between Failure (MTBF): 116,009 hours (~ 13 years) Acoustic noise: 0 dB Status LEDs: System: Power, PoE Maximum Power Per Port: Link, Activity, Speed, PoE Active, PoE Status Power Supply: Total Power Consumption: 88 W maximum 802.3af Power Consumption: 55 W maximum (Ports 1 ? 8) 48VDC, 4.5 power output; plug is localized to country of sale Physical Specifications Dimensions (W x D x H): 11.3 x 4.1 x 1.1 in. (287 x 103 x 27 mm) Weight: 1.85 lbs (0.84 kg) Environmental Specifications Operating temperature: 32 to 104?F (0 to 40? C) Storage temperature: 14 to 158?F (-10 to 70?C) Operating humidity: 90% maximum relative humidity, non-condensing Storage humidity: 95% maximum relative humidity, non-condensing Operating altitude: 10,000 ft (3,000 m) maximum Storage altitude: 10,000 ft (3,000 m) maximum