![](/images/new-backgrounds/1205321/20532157x1.webp)
For instructions on attaching devices to the MDA ports, refer to the publication for your switch. After connecting the port cables, follow the instructions to connect power and verify the installation.
Note: The IEEE 802.3u specification requires that all ports operating at 100 Mb/s use only Category 5 unshielded twisted pair (UTP) cabling.
Replacing an installed MDA
To replace an installed MDA:
1Unplug the AC power cord from the back of the switch, or unplug the switch module from the switch backplane.
2Remove the installed MDA.
Loosen the two thumbscrews on the MDA front panel to remove the MDA.
3Install the replacement MDA.
Be sure to firmly tighten the two thumbscrews on the MDA front panel.
4Plug the AC power cord into the back of the switch, or plug the switch module into the switch backplane.
5Attach devices to the MDA ports.
For instructions on attaching devices to the MDA ports, refer to the publication for your switch.
27