S400ETH - DSK is a surge protection for Ethernet / Profinet cabling with twisted pair. Suitable for LAN interfaces ( Class D / Cat.5 ) networks with data transmission rates up to secure 1 Gbit/s. Token Ring, ISDN, DS1, Ethernet and Power over Ethernet (PoE) "A mode" and "B mode", the device includes an adapter protection for eight signal paths via RJ45 connectors.