The 9H421-12 is a Fast Ethernet SmartSwitch module for the SmartSwitch 9000 chassis (formally referred to as the MMAC-Plus chassis). The 9H421-12 Fast Ethernet SmartSwitch module is a twelve port switch module, equipped with twelve 100BASE-FX multimode fiber (MMF) ports. The 9H421-12 Fast Ethernet SmartSwitch module connects to the SmartSwitch 9000 INB-2 backplane interface, and employes the family of SmartSwitch ASICs, a high performance switch design, and an Intel i960 microprocessor.
The 9H421-12 Fast Ethernet SmartSwitch module can be installed in any of the 14 slots that are available within the SmartSwitch 9000 chassis. The 9H421-12 also uses a Class 1 Laser transceiver, ensure you have read all safety information before installing or operating.
The 9H421-12 Fast Ethernet SmartSwitch module have one interface to the INB-2 and tweleve front panel Fast Ethernet interfaces. The front panel connections for the 9H421-12 Fast Ethernet SmartSwitch module are via twelve standard multimode fiber SC connectors, providing links up to 2000 meters in length, when operating in half duplex (point to point) or full duplex. Distance of links on a shared LAN in half duplex is 412 meters.