Comtrend Corporation GS-7508 User manual

Quick Installation Guide
GS-7508 | 8-Port PoE Gigabit Ethernet Switch
I. Product Information
I-1. Package Contents
1. GS-7508 PoE Switch
2. Quick Installation Guide
3. Power Cable
4. 4 x Foot Pads
5. Rack-Mount Kit
1
2
4
I
5
3

2
I-2. Hardware Overview
Front Panel
The front panel of the switch consists of:
8 x 10/100/1000Mbps PoE-Capable RJ-45 Ports
Dip Switch Panel
PoE Alert LED
PWR LED
Port LED Indicator Bank
Rear Panel
The rear panel of the switch consists of:
Power Cord Port (DC IN 54V / 1.3A)

3
I-3. DIP Switch Definition
DIP Switch
Status
Description
1
(Extend)
On
This mode makes the PoE Ports
1-2 operate at auto-negotiation
10Mbps speed duplex mode
only, but the delivery distance
of PoE power and network data
can reach 200m.
Off (Default)
This mode makes the PoE Ports
1-2 operate as a general switch.
2
(Extend)
On
This mode makes the PoE Ports
3-4 operate at auto-negotiation
10Mbps speed duplex mode
only, but the delivery distance
of PoE power and network data
can reach 200m.
Off (Default)
This mode makes the PoE Ports
3-4 operate as a general switch.
3
(VLAN)
On
This mode makes the PoE switch
operate as a VLAN isolation
switch and ports 1-4 will isolate
respectively. Ports 1-4 can only
communicate with port 5
(uplink port).
Off (Default)
This mode makes the PoE switch
operate as a general switch.
4
(QoS)
On
This mode makes the PoE switch
operate as a QoS switch, it
follows the 802.1p QoS, video
and voice with high priority.
Off (Default)
This mode makes the PoE switch
operate as a general switch.
5
(Extend)
On
This mode makes the PoE Port 5
operate at auto-negotiation
10Mbps speed duplex mode
only, but the delivery distance
of PoE power and network data
can reach 200m.

4
Off (Default)
This mode makes the PoE port 5
operate as a general switch.
6
(Extend)
On
This mode makes the PoE Port 6
operate at auto-negotiation
10Mbps speed duplex mode
only, but the delivery distance
of PoE power and network data
can reach 200m.
Off (Default)
This mode makes the PoE port 6
operate as a general switch.
7
(QoS)
On
This mode makes the PoE Port 7
operate at auto-negotiation
10Mbps speed duplex mode
only, but the delivery distance
of PoE power and network data
can reach 200m.
Off (Default)
This mode makes the PoE port 7
operate as a general switch.
8
(VLAN)
On
This mode makes the PoE switch
operate as a VLAN isolation
switch and ports 5-7 will isolate
respectively. Ports 5-7 can only
communicate with ports 1, 2, 3,
4, & 8 uplink ports).
Off (Default)
This mode makes the PoE switch
operate as a general switch.
Please note, after turning ON the DIP switch you will have to reboot the switch.
I-4. LED Indicator
PWR:
LED Status
Mode
Description
Green
On
Power on
Off
Off
Power off or fail

5
PoE Alert:
LED Status
Mode
Description
Green
On
PoE power output over
the 90% PoE power
Off
Off
PoE power output under
the 90% PoE power
Ethernet Port (Lower Port LED Indicator Bank):
LED Status
Mode
Description
Green
On/Blinking
1000Mbps
connected/data
transmitting
Amber
On/Blinking
10/100Mbps
connected/data
transmitting
Off
Off
Disconnected or fail
PoE Power (Upper Port LED Indicator Bank):
LED Status
Mode
Description
Green
On
PoE power output on
Off
Off
PoE power output off
I-5. Desktop Installation
Install the switch on a desktop by attaching the cushioning rubber feet to
the bottom corners of the switch to protect against external vibration.
Allow adequate space for ventilation between the device and any
objects around.

6
I-6. Rack-Mounting Installation
The switch can be mounted in an EIA standard-sized 19-inch rack that can
be placed in a wiring closet with other equipment. To install the switch,
please follow these steps:
1. Attach the mounting brackets on the switch’s side panels (one on each
side) and secure them with the screws provided.
Bracket Installation
2. Use the screws provided with the equipment rack to mount the Switch
on the rack and tighten it.
Rack Installation

7
II. Quick Setup
II-1. Switch to End Device
1. Connect the switch to local power with the included power cable.
2. Use a standard Cat5/5e Ethernet cable to connect the switch to end
devices as shown below. Switch ports will automatically adjust to the link
rate of the device to which it’s connected. Any port can be used to
uplink to an existing network.
Application Diagram
II
Switch
Outlet
Internet
VoIP
Phone
IP
Camera
Access
Point
POWER
+
DATA
POWER
+
DATA
Gateway

8
The following information should help you diagnose basic setup or
installation problems.
Power LED is OFF: If the Power LED fails to light up, then check if the power
cord is properly connected to external power adapter and the power
source. Make sure the DC power jack is firmly plugged into the power
socket of the switch.
Link/Activity (LNK/ACT) is OFF: If the LNK/ACT LED fails to light up when
connected to devices, then ensure that the network device attached to
the switch is powered on. You can also check the network cable and
ensure it is properly connected to the switch and the network device.
Lastly, check the network cable and ensure the UTP cable complied with
EIA/TIA 568 and Category 5 specifications.
FOR MORE HELP: For instructions on advanced features, FAQ, etc., please
visit our online Product Webpage.
For more information:
YouTube: https://www.youtube.com/user/ComtrendConnection
Facebook: https://facebook.com/Comtrend
Website: http://us.comtrend.com/
Support: Visit our website or call 1-877-COMTREND (1-877-266-8736)
Your Device is Now Connected!
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Troubleshooting
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Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
4. Consult the dealer or an experienced radio technician forhelp.
EMC Warning
This equipment complies with EU radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator &
your body.
Safety
1. This product is designed for indoor use only; DO NOT install the adapter outdoors.
2. DO NOT put this product at or near hot or humid places, e.g. kitchen or bathroom. DO
NOT use any spray or liquids on it.
3. DO NOT touch the product with wet hands and DO NOT clean the product with a wet
cloth. Use a soft, dry cloth to clean the device.
4. DO NOT expose the product to lit candles, cigarettes, open flames, high or low
temperatures, etc.
5. DO NOT pull any connected cable with force; disconnect it from the power first.
6. Ensure proper ventilation, so that air flows freely around the product.
7. If you find that the product is not working properly, please contact your dealer of
purchase and ask for help. Do NOT open the casing
8. DO NOT disassemble the product, warranty will be void.

10
Supplier’s Declaration of Conformity
We
Company: Comtrend Corporation - North America
Address: 14 Chrysler, Irvine, CA, 92618
Certify and declare under our responsibility that the following equipment:
Product Name: 8-Port PoE Gigabit Ethernet Switch
Model Name: GS-7508
Brand Name: COMTREND
Is tested with the declaration described above, and is in conformity with the relevant FCC (Federal
Communication Commission) standards, and technical specifications have been applied:
EMC:
47 CFR FCC Rules and Regulations Part 15 Subpart B, Class BDigital Device
Class B :
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
Notes:
15.19(a)(3) Regulations :
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired
operation.