3Com 5500-EI Getting Started Manual page 49

Inserting an SFP To activate the SFP ports:
Transceiver
SFP transceivers are hot-insertable and hot-swappable. You can remove
them from and insert them into an appropriate SFP port without having
to power down the switch.
1 The SFP transceiver (shown in Figure 18) is keyed so that there is only one
way that you can install it correctly. Hold the transceiver so that the
connector is toward you and the product label is visible. Ensure that the
wire release lever is closed (in the upright position).
2 Gently slide the transceiver into the SFP port until it clicks. If the
transceiver does not click into place, remove it, turn it over and re-insert
it.
3 Remove the plastic protective cover, if fitted.
CAUTION: The dual personality ports on the Switch 5500G-EI enable you
to activate an RJ-45 port, an SFP port, or a mixture of both (for example,
on the 24 Port switch, you can activate the RJ-45 ports 23 and 24 and the
SFP ports 21 and 22 at the same time). If you try to activate the same dual
personality RJ-45 port and SFP port (for example, RJ-45 port 23 and SFP
port 23 at the same time), the SFP port takes priority.
Figure 18 Inserting an SFP Transceiver
Product
label
SFP Operation 49
Suitable port
on host Switch