Dell PowerSwitch S5000 Guía De Introducción página 21

NOTE: A blue color release latch indicates that the Ethernet module does not
support hot swapping during switch operations. Instead, you must power down the
switch before removing and replacing an Ethernet module. A red color release
latch indicates that the Ethernet module supports hot swapping during switch
operations.
Figure 11. Part name and Port number on the Ethernet Module Handle
1. Part Name
2. Port Number
19