TP-Link TL-SG3109 Installation Manual page 14

TL-SG3109/TL-SL3428/TL-SL3452
2 1000Base-T Copper port — Copper RJ-45 Gigabit port designated on

the device as ports GIGA1 and GIGA2.
2 1000Base-FX SFP port — Fiber Gigabit ports designated on the device

as ports SFP1 and SFP2.
RS-232 DB-9 Console port — An asynchronous serial console port

supporting the RS-232 electrical specification. The port is used to connect
the device to the console managing the device.
The front panel also contains the following:
System LEDs — Indicates system hardware status.

10/100 Base-T Port LEDs — Indicates the 10/100 Base-T port status.

Each port has two LEDs all grouped together on the left side of the device.
Giga Port LEDs — Indicates the Giga port status. Each port has two LEDs

on the left side of the device.
SFP Port LEDs — Indicates the SFP port status. Each port has one LED

on the right side of the port.
TL-SL3428 LEDs
The LED indications are described in the following table:
Port LED Indication
Top LED
24 10/100M
Ports
Bottom LED
Gigabit Managed Switch Family Installation Guide
Description
• Off — No link is established on the port.
• Solid Green — A link is established on the port.
• Flashing Green — Packet transmission or reception is
occurring on the port.
• Off — No 100Mbps link is established on the port.
• Solid Green — A valid 100Mbps link is established on
the port.
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