Sfp Slots - ZyXEL Communications GS1900-8 User Manual

An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100/1000
Mbps) and duplex mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover
Ethernet cable.
3.1.1.1 Default Ethernet Settings
The factory default negotiation settings for the Ethernet ports on the Switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off

3.1.2 SFP Slots

These are slots for Small Form-Factor Pluggable (SFP) transceivers. A transceiver is a single unit
that houses a transmitter and a receiver. Use a transceiver to connect a fiber-optic cable to the
Switch. The Switch does not come with transceivers. You must use transceivers that comply with
the Small Form-Factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA). See the SFF
committee's INF-8074i specification Rev 1.0 for details.
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)
To avoid possible eye injury, do not look into an operating fiber-optic
module's connectors.
3.1.2.1 Transceiver Installation
Use the following steps to install a transceiver.
Insert the transceiver into the slot with the exposed section of PCB board facing down.
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Figure 18 Transceiver Installation Example
Press the transceiver firmly until it clicks into place.
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Chapter 3 Hardware Overview
GS1900 Series User's Guide
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