TP-Link TL-SF1048 48-Port 10/100Mbps Rackmount Switch Interface Available: 16 x 10/100Mbps RJ45 Ports, AUTO Negotiation/AUTO MDI/MDIX; Internal Memory: 2Mb; Protocols Supported: IEEE 802.3i IEEE 802.3u IEEE 802.3x

From the Manufacturer

The 48-Port Fast Ethernet Switch TL-SF1048 is designed to meet the needs of the most demanding workgroup and departmental connectivity requirements. A reliable, easy-to-use switch without the complexity of management, the TL-SF1048 provides 48 10/100Mbps ports. The TL-SF1048 combines ease of use with unsurpassed performance resulting in an exceptional value for any cost-conscious network administrator who wants the best possible solution at the best possible price.