Physical Installation; Figure 2. Removing The Expansion Slot Cover - Enterasys SSIM-H2-02 Installation And User Manual

Hardware Installation
Warning: Expansion modules are not hot-swappable. If you install or remove
expansion modules while the power to the switch is on, damage may occur to the
switch and to the module.
Warning: Be sure to install a version of the base switch software that supports the
SSIM-H2-02 (version 3.10 or later) before physically inserting the module.
Otherwise, the switch will not recognize it and this may in some cases corrupt the
configuration.
Use the following steps to install the module in a SmartStack STS16-20RM Token
Ring Switch:
1. Power off the base switch by unplugging the power cord from the power outlet.
If the switch uses the optional SmartStack STS-PSU Redundant Power Unit,
unplug the connector from the base switch as well.
2. Select an empty expansion module slot in which to install the module. You can
install the module in either or both of the slots.
3. Remove the cover from the expansion slot on the front of the switch by
loosening the two retaining thumb screws (see Figure 2). Keep the plate for use
in the cases when the expansion module is removed.

Figure 2. Removing the Expansion Slot Cover

SSIM-H2-02 Fast Ethernet - Translational Switch SmartStack Interface Module Installation and User Guide
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Installation