ports : 24 x 10/100/1000 mbps twisted-pair rj-45 ports 2 x sfp slots for mini gbic modules switching bandwidth: 48 gbps forward rate (1000 mbps port): 1,480,000 packest per sec forward rate (100 mbps port): 148,000 packets per sec forward rate (10 mbps port): 14,800 packets per sec latency (1000 to 1000 mbps): 20 s max packet buffer memory: 2 mb mac address database: 8,000 mean time between failure (mtbf): 87,600 hours stds compliance : ieee 802.3i, 802.3u, 802.3ab, 802.3z,802.3x flow control status leds unit: power ; per network port: link, activity, speed dimensions (h x w x d): 43 x 330 x 107 mm * compact enough for desktop but comes with a rack mount kit. * compatible with pc, macintosh, linux, and unix operating systems * powerful non blocking backplane * each port is equipped with automatic speed and duplex sensing, plus auto uplink to adjust for straight-through or crossover cables to make the right link sys reqs : utp category 5 cables or better ; ntwk card for each pc or svr