Cabling distance ( maximum) 2 km ( full duplex) or 412 m ( half-duplex) Ports 12 MTRJ 100Base-FX ports( IEEE 802.3u Type 100Base-FX) , Duplex: half or full Product dimensions ( W x D x H) 8.97 x 8.0 x 1.75 in. Weight ( Imperial ) 1.79 lb. Weight ( Metric ) 0.81 kg Extended specifications Technical Information Application/ Usage Data Networking Interfaces/ Ports Interfaces/ Ports 12 x 100Base-FX Interfaces/ Ports Details 12 x MT-RJ 100Base-FX Auto MDI/ MDI-X Media & Performance Connectivity Media Fiber Data Transfer Rate 100 Mbps Fast Ethernet Full-duplex Physical Characteristics Dimensions 1.8" Height x 8.0" Width x 9.0" Depth Weight ( Approximate) 1.79 lb