Power Connector
 Chapter 2.  Physical Description   |   17
GS728TS, GS728TPS, GS752TS, and GS752TPS Smart Switch Hardware Installation Guide 
Figure 9. GS752TPS Back Panel
The back panel contains a power connector.
LED Designations
RJ-45 Port LEDs
The following table describes the RJ-45 port LED designations. There is one LED for each 
RJ-45 port.
LED Designation
Ethernet Mode: SPD/Link/ACT 
LED
•  Off—  No link established.
•  Solid Green —  A valid 1000 Mbps link is established.
•  Blinking Green —  The port is transmitting or receiving packets at 
1000  Mbps.
•  Solid Yellow —  A valid 10/100  Mbps link is established.
•  Blinking Yellow —  The port is transmitting or receiving packets 
at  10/100  Mbps.
PoE Mode: PoE Status LED •  Off —  No PoE powered device (PD) is connected.
• Solid Green —The PoE powered device (PD) is connected and the port 
is supplying power successfully.
•  Solid Yellow —  Indicates one of the following failures resulted in 
stopping power to that port:
- Short circuit on the PoE power circuit.
- PoE power demand exceeds the power available.
- PoE current exceeds the PD's classification.
- Out of proper voltage band (44 ~ 57 VDC for af, 50~57 VDC for at).
Note:  If the port media is changed to fiber, the Ethernet LED will change to 
the OFF status.