Anti-vibration keepLiNK industrial ethernet switches are designed to withstand high levels of vibration and shock. Anti-static Special design to prevent static interference can make the unmanaged network switch operate more stably. 6KV Lightning Protection With power supply surge protection and network interface surge protection which can effectively prevent the device from being damaged by lightning. Dustproof Enclosed design and IP40 protection can effectively prevent dust from entering the equipment. Extreme Temperature Working A wide operating temperature range of -30° ~75° C (-22° ~167° F) allows for installations in harsh environments with extreme hot or cold conditions. Redundant Power keepLiNK 10 port industrial network switch features dual power inputs to provide redundant power with overload current protection. Metal Housing Aluminum shell, solid and durable, can realize effective cooling without fan, and operate more quietly. Support network topology Supports Ring topology, Star topology, Bus topology, Tree Topology, Hybrid topology