1,Eight/Sixteen/Twenty-four / ports Network signal SPD 2,Apply to network switches /computer networks 3,20 years` experience Product DescriptionNKP- ... protection of network servers, routers, network switches,HUB, computer networks100M Ethernet IP phones and other devices in the network information terminal line.Technical ... ling: BVR≥2.5 mm2 . RJ45 crystal connector Network lightning SPD NKP-TEL-5U