Media Dependent Adapters
302401-D Rev 00 C-11
For installa tion i nstru ctions, see Installing an MDA” on page C-11.

Installing an MDA

The Uplink Module slot on the BayStack 450 switch accommodates a single
MDA. The connection can be either an RJ-45 10/100BASE-TX MDA or a fiber
(100BASE-FX or 1000BASE-SX/LX) MDA with an SC or MT-RJ connector.
To install an MDA into the Uplink Module slot:
1. Unplug the AC power cord from the back of the switch.
2. Loosen the thumb screws and remove the filler panel (or previously
installe d MDA) from th e Uplink Module slot.
Table C-4. 1000BASE-LX MDA Components
Item Label Description
1 Link Commu nic at ion link LEDs (gree n):
On: Valid communications link.
Off: The com m unica tions li nk con nectio n is bad or there is no connectio n to
this port.
Blinking: The corresponding port is management disabled.
2PHY
(or)
Phy Select
Phy status LEDs (green):
On: The corresponding Phy port is active.
Off: The corresponding Phy port is in backup mode or there is no
connection to this port.
3 Activity Port activity LEDs (green):
Blinking: Indicates network activity level for the corresponding port. A high
level of network activity can cause LEDs to appear to be on continuously.
4 1000BASE-X SC port connectors (see 1000BASE-LX Multimode Applications
on page C-13 for special requiremen ts).
Note: The MDAs are not hot-swappable. Power down the switch before
installing or removing an MDA.
kombk.book Page 11 Tuesday, June 29, 1999 3:25 PM