The Allied Telesis GS910 Series offers unmanaged Gigabit switching solutions for the desktop, and small networks. The series has internal and external power supply versions, and also features network loop guard technology, which automatically detects any unexpected network loops, and prevents network devices from broadcast packet storms.With minimal to no set-up, GS910 Series switches provide simple and seamless connectivity to existing network infrastructure. Each unmanaged switch is backed with a lifetime limited warranty.