ZyXEL Communications Dimension ES-3148, User Manual, Page: 43 / 282

Dimension ES-3148 User’s Guide
Chapter 3 Hardware Overview 41
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3.1.3 Mini-GBIC Slots
These are slots for mini-GBIC (Gigabit Interface Converter) transceivers. A transceiver is a
single unit that houses a transmitter and a receiver. The switch does not come with
transceivers. You must use transceivers that comply with the SFP Transceiver MultiSource
Agreement (MSA). See the SFF committee’s INF-8074i specification Rev 1.0 for details.
There are two pairs of Gigabit Ethernet/mini-GBIC ports. The mini-GBIC ports have priority
over the Gigabit ports. This means that if a mini-GBIC port and the corresponding Gigabit port
are connected at the same time, the Gigabit port will be disabled.
You can change transceivers while the switch is operating. You can use different transceivers
to connect to Ethernet switches with different types of fiber-optic connectors.
• Type: SFP connection interface
• Connection speed: 1 Gigabit per second (Gbps)
Note: To avoid possible eye injury, do not look into an operating fiber-optic module’s
connectors.
3.1.3.1 Transceiver Installation
Use the following steps to install a mini GBIC transceiver (SFP module).
1 Insert the transceiver into the slot with the exposed section of PCB board facing down.
Figure 11 Transceiver Installation Example
2 Press the transceiver firmly until it clicks into place.
3 The switch automatically detects the installed transceiver. Check the LEDs to verify that
it is functioning properly.