This 16-port 10/100Mbps Ethernet Switch is designed especially for SOHO (Small Office/Home Office) or workgroup users. The rackmount size metal case design combined with a safety certified internal power supply make this switch a very cost-effective solution for environments with less than 16 users. This switch can be used on desktop or be rackmounted. Features: Fits an 11in rack. Complies with IEEE 802.3/802.3u Ethernet standards. 16 10/100Mbps RJ45 ports. Full and half duplex support. IEEE802.3x flow control support. Built-in 8K MAC address. Built-in 4Mbps memory buffer. Internal Power Supply: 110/220V. Automatic source address learning. Plug-and-Play. Easy-to-read LED indicators for installation and operation diagnostics. Please note - once this item is opened it is non-returnable unless defective.