FS728TP Hardware Installation Guide
Physical Description 3-22
v1.0, November 2007
System LEDs
The following table describes the system LED designations.
Device Hardware Interfaces
This section provides information for the following hardware interfaces:
• RJ-45 Ports
• SFP GBIC Module
• Factory Defaults Button
RJ-45 Ports
RJ-45ports are auto-sensing ports. When inserting a cable into an RJ-45 port, the switch
automatically ascertains the maximum speed (10 or 100 or 1000 Mbps) and duplex mode (half- or
full-duplex) of the attached device. All ports support only Unshielded Twisted-Pair (UTP) cable
terminated with an 8-pin RJ-45 plug.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink. This
technology allows attaching devices to the RJ-45 ports with either straight-through or crossover
cables. When inserting a cable into the switch’s RJ-45 port, the switch automatically:
• Senses whether the cable is a straight-through or crossover cable.
• Determines whether the link to the attached device requires a “normal” connection (such as
when connecting the port to a PC) or an “uplink” connection (such as when connecting the
port to a router, switch, or hub).
Table 3-2. System LEDs
LED Designation
Power LED • Off - Power is disconnected.
• Solid Green - Power is supplied to the switch and is operating
normally.
FAN LED • Off - FAN is operating normally.
• Solid Yellow - FAN has failed.
MAX POE LED • Off - There is at least 7W of PoE power available for another device.
• Solid Yellow - Indicates that less than 7W of PoE power is available.
• Flashing Yellow - Indicates that the PoE MAX LED was active in the
previous two minutes.
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