10/100/1,000 auto-sensing ports automatically detect optimal network speeds; 2 small form-factor pluggable GBIC module slots (SFP); All RJ45 ports with Auto-MDIX (auto uplink) support; Supports NWay auto-negotiation; Store & forward switching architecture; Full/half duplex operation; Complies with the IEEE 802.3az (Energy Efficient Ethernet EEE) specification; Green Ethernet power-saving technology deactivates unused ports & adjusts power levels based on the cable length; Supports 802.3x flow control for full duplex mode & collision-based backpressure for half duplex mode; Supports jumbo frames 9kB; 512kB buffer memory; Supports up to 8K MAC address entries; Fanless design ideal for silent operation; Supports MAC address auto-learning & auto-aging; 3-year warranty; Includes 19 rack-mount brackets;