PE042-55-C This device has 5-C and 4 PoE ports with a power output of 30W per port. It also has 2 uplink ports and can transmit power and data over long distances up to 250 meters using Cat 6 cables. It conforms to IEEE 802.3af and IEEE 803.3at standards and supports dialing VLAN and PoE Watchdog. Additionally, it has a port lightning protection level of 4kv and an ESD of 8kv. The power lightning protection rating is 4kv, making it a safe and reliable option for your networking needs