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38 CHAPTER 2: INSTALLING THE SWITCH
SFP Operation The following sections describe how to select and use an SFP transceiver
in an SFP port.
Approved SFP
Transceivers
The following list of approved Gigabit Ethernet SFP transceivers is correct
at the time of publication.
■ 3CSFP91 SFP (1000BASE-SX)
■ 3CSFP92 SFP (1000BASE-LX)
■ 3CSFP93 SFP (1000BASE-T)
■ 3CSFP93-4500 SFP (1000BASE-T)
■ 3CSFP97 SFP (1000BASE-LH70)
2 3CSFP93-4500 1000BASE-T SFPs are supplied with the Switch 4500 50
port (for ports 51/52), the Switch 4500 PWR 26 (for ports 27/28) and
Switch 4500 PWR 50 port (for ports 51/52). The Switch 4500 26 port is
not supplied with 3CSFP93-4500 transceivers.
The 3CSFP93-4500 is approved for use in the Switch 4500 only.
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
SFP transceivers must be matched with the correct cable type as follows:
■ 1000BASE-SX, 1000BASE-LX, 1000BASE-LH70 or 1000BASE-T:
■ 1000BASE-SX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a multimode fiber-optic cable.
■ 1000BASE-LX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a single-mode fiber-optic cable or to a multimode
fiber using a conditional launch cable.
■ 1000BASE-LH70 SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a single-mode fiber-optic cable.