Buffalo"s BS-G21U unmanaged business-class multiport gigabit switches offer a quick and easy way to extend your office network at fast gigabit Ethernet speeds. Plug and play installation requires no additional software or configuration; simply plug your network ready devices into one of the available Ethernet ports. Each AUTO-MDIX port automatically detects and configures the correct connection while optional jumbo frame support provides maximum performance. The BS-G21U unmanaged business-class gigabit switches include Intelligent Power Control, an energy conservation feature that monitors the activity status of each port to greatly reduce the total power consumed. The durable metal chassis is rack-mountable and equipped with holes for wall-mounting or rubber feet for easy placement on a desktop. Fast networking speeds, eco minded operation and performance-minded features make Buffalo BS-G21U unmanaged business-class multiport gigabit switches a perfect network extension solution for your office.