Shielded RJ45 Ports. IEEE 802.3 10Base-2, 10Base-5, 10Base-T compliant. FCC Class A, CE and UL/CSA approved. Data Transfer rate 10 Mbps. LEDs for Power/Collision, Link per port Link/Activity. Stackable up to 4 hubs maximum. 1 AUI and 1 BNC port. Internal power supply. 19" Rack mountable. Lifetime Warranty. 24 Port Ethernet Hub 24 x shielded RJ45 ports.