1. Comply with IEEE802.3, IEEE802.3u, IEEE802.3z 2. Eight 10/100Mbps unshielded twisted pair ethernet ports provided (RP-3108) 3. One 1000Base-SX SC port provided. (RP-3108) 4. RAM buffer: 4mb for Nway port,2mb for GiGa Bit port (RP-3108) 5. Maximum internal bandwidth: 2.4GB (RP-3108) 6. Sixteen 10/100Mbps unshielded twisted pair ethernet ports provided (RP-3216) 7. Two 1000Base-SX SC ports provided. (RP-3216) 8. RAM buffer: 8mb for Nway port,4mb for GiGaBit port (RP-3216) 9. Maximum internal bandwidth: 9.2GB (RP-3216) 10. One of the 10/100Mbps UTP ports is configurable as Normal (MDI-X) or Uplink (MDI). 11. Auto-negotiation provided for each 10/100M port and 1000Base-SX port 12. Comprehensive LED indicator panel to monitor overall switching condition 13. With internal universal power supply 14. With 19-inch rack mounted width