3Com 3CR17450-91 Getting Started Manual - page 29
Using SFP Transceivers
27
Use this transceiver to connect the Switch directly to a single-mode
fiber-optic cable.
If the SFP transceiver is faulty, it will not operate within the Switch. See
“Solving Hardware Problems” on page 51.
3Com recommends that you only use SFP transceivers supplied by 3Com.
If the SFP transceiver is invalid, it will not be recognized by the Switch.
To insert an SFP transceiver:
1 Hold the transceiver so that the connector is toward you and the product
label is visible. Ensure 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.
3 Remove the plastic protective cover if fitted.
CAUTION: The dual personality ports on the Switch 3870 enable you to
activate an RJ-45 port or an SFP port or a mixture of both (for example,
on the 24-Port Switch, you can activate the RJ-45 ports 21 and 22 and
the SFP ports 23 and 24 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 will take priority.