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GS108T Hardware Installation Guide
Physical Description 2-3
v1.0, January 2010
System LEDs
The following table describes the system LED designations.
Table 2-2. System LEDs
LED Designation
Power/Status LED • Solid Green - Power is supplied to the switch and is operating normally.
• Solid Yellow - The switch is booting.
• Off - Power is disconnected.
Device Hardware Interfaces
RJ-45 Ports
RJ-45 ports are auto-sensing ports. When inserting a cable into an RJ-45 port, the switch
automatically ascertains the maximum speed (10, 100, or 1000 Mbps) and duplex mode (half-
duplex 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).
• Configures the RJ-45 port to enable communications with the attached device, without
requiring user intervention. In this way, the Auto Uplink technology compensates for setting
uplink connections, while eliminating concern about whether to use crossover or straight-
through cables when attaching devices.
Powered-Device Port
The NETGEAR GS108T Smart Switch is a PoE Powered Device (PD) and can receive power
from PoE Power Sourcing Equipment (PSE). To power the GS108T Smart Switch from a PoE
power source, such as the NETGEAR GS748TPS ProSafe Gigabit Stackable PoE Smart Switch,
you can connect the PSE to Port 1 on the GS108T Smart Switch through a standard Cat5 UTP
cable. This allows the GS108T Smart Switch to be powered by PoE.