Media Dependent Adapters309978-D Rev 01 C-17For instructions on installing your 450-1GBIC MDA on your BayStack 450switch, see “Installing an MDA” following this section.For instructions on installing GBICs on your 450-1GBIC MDA, see “InstallingGBICs” on page C-19.Installing an MDAThe Uplink Module slot on the BayStack 450 switch accommodates a singleMDA. The connection can be either an RJ-45 10/100BASE-TX MDA or a fiber(100BASE-FX, 1000BASE-SX/LX, or ATM) MDA with an SC or MT-RJconnector.Table C-6. 450-1GBIC MDA ComponentsItem Label Description1 Link Communication link LEDs (green):On: Valid communications link.Off: The communications link connection is bad or there is noconnection to this port.Blinking: The corresponding port is management disabled.2 Phy Phy status LEDs (green):On: The corresponding Phy port is active.Off: The corresponding Phy port is in backup mode or thereis no connection to this port.3 Activity Port activity LEDs (green):Blinking: Indicates network activity level for thecorresponding port. A high level of network activity can causeLEDs to appear to be on continuously.4 GBIC Host port.Note: The MDAs are not hot-swappable. Power down the switch beforeinstalling or removing an MDA.