3com 3848 User Manual

SFP Operation

CAUTION: If you want to install the Switch using a Category 5E or
Category 6 cable, 3Com recommends that you briefly connect the cable
to a grounded port before connecting network equipment. If you do not,
the cable’s Electrostatic Discharge (ESD) may damage the Switch's port.

You can create a grounded port by connecting all wires at one end of a
UTP cable to an earth ground point, and the other end to a female RJ-45
connector located, for example, on a Switch rack or patch panel. The
RJ-45 connector is now a grounded port.

SFP Operation

The following sections describes how to insert an SFP transceiver into an
SFP port.

SFP transceivers are hot-insertable and hot-swappable. You can remove
them from and insert them into any SFP port without having to power
down the Switch.

Approved SFP

Transceivers

The following list of approved SFP transceivers is correct at the time of
publication.

■

3CSFP91 SFP (SX)

■

3CSFP92 SFP (LX)

■

3CSFP97 SFP (LH70)

To access the latest list of approved SFP transceivers for the Switch on the
3Com Corporation World Wide Web site, enter this URL into your
internet browser:

http://www.3com.com

Inserting an SFP

Transceiver

To be recognized as valid, the SFP transceiver must have the following
characteristics:

■

1000BASE-SX, 1000BASE-LX or 1000BASE-LH70:

■

1000BASE-SX SFP transceiver

Use this transceiver to connect the Switch directly to a multimode
fiber-optic cable.

■

1000BASE-LX SFP transceiver

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