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Frequently Asked Questions (FAQ)
Q1. Why is the Power LED not lit?
General Specifications Specifications
Standard
IEEE 802.3i, IEEE 802.3u, IEEE 802.3x (for all models)
IEEE 802.3ab, IEEE 802.1p (only for MS105GP and MS108GP)
The Power LED should be lit when the power system is working normally. If the Power
LED is not lit, please check as follows:
Protocol
CSMA/CD. 802.3af/at PD supported
A1: Make sure the AC power cord/power adapter is connected the switch with power
source properly.
A2: Make sure the voltage of the power supply meets the requirements of the input
voltage of the switch.
Interface
A3: Make sure the power source is on.
Q2. Why is the Link/Act LED not lit when a device is
connected to the corresponding port?
It is recommended that you check the following items:
MS105GP:
5 1000 Mbps RJ45 Ports Auto-Negotiation/Auto MDI/MDIX
PoE Ports: Port 1–4
MS108GP:
8 1000 Mbps RJ45 Ports Auto-Negotiation/Auto MDI/MDIX
PoE Ports: Port 1–7
MS110P:
10 10/100 Mbps RJ45 Ports Auto-Negotiation/Auto MDI/MDIX
PoE Ports: Port 1–8
MS110CP/MS110CMP:
8 10/100 Mbps RJ45 Ports Auto-Negotiation/Auto MDI/MDIX
2 1000 Mbps RJ45 Ports Auto-Negotiation/Auto MDI/MDIX
A1: Make sure that the cable connectors are firmly plugged into the switch and the
device.
Network Media (Cable)
A2: Make sure the connected device is turned on and working well.
10BASE-T: 2-pair UTP/STP (≤100m) of Cat. 3 or above
100BASE-TX: 2-pair UTP/STP (≤100m) of Cat. 5 or above
1000BASE-T: 4-pair UTP/STP (≤100m) of Cat. 5e or above
(except for MS110P)
A3: The cable must be less than 100 meters long (328 feet). If Extend Mode is enabled,
it should be less than 250 meters (820 feet).
Switching Capacity
MS105GP: 10 Gbps
MS108GP: 16 Gbps
MS110P: 2 Gbps
MS110CP/MS110CMP: 5.6 Gbps
Q3. Why are PoE ports not supplying power for PoE devices?
Store-and-Forward
Forwarding Method
Automatically learning, automatically aging
MAC Address Learning
When the total power consumption of connected PoE devices exceeds the maximum,
the PoE port with a smaller port number has a higher priority. The system will cut off
power to the ports with larger port numbers to ensure supplying to other ports.
Power Supply
Take MS108GP as an example. If port 1, 2 and 4 are consuming 18 W respectively, and
an additional PoE device with 15 W is inserted to port 3, the system will cut off the
power of port 4 to compensate for the overload.
External Power Adapter
Input:
NV models: 220-240 VAC, 50/60 Hz
UN models: 100-240 VAC, 50/60 Hz
Output:
MS110CMP: 54 VDC/2.22 A
Other models: 53.5 VDC/1.31 A
Q4. What should I notice before using the PoE Auto Recovery
feature?
PoE Budget
MS110CMP: 115 W (up to 30 W for each PoE port)
Other models: 65 W (up to 30 W for each PoE port)
CE, RoHS
Certification
A1: Before upgrading a connected PoE powered device (PD), disable PoE Auto
Recovery to avoid the PD’s damage.
Environmental and Physical Specifications
A2: When a PD does not send data packets to the switch for a long period in certain
scenarios (e.g. an IPC in sleep mode), disable PoE Auto Recovery to avoid the PD
repeatedly rebooting.
CE, RoHS
Certification
Operating Temperature
-10˚C to 40˚C (14˚F to 104˚F)
-40˚C to 70˚C (-40˚F to 158˚F)
For technical support, replacement services, user guides, and other information,
please visit https://www.mercusys.com/support/.
Storage Temperature
Operating Humidity
10% to 90% non-condensing
Storage Humidity
5% to 90% non-condensing
Safety Information
EU declaration of conformity
Mercusys hereby declares that the device is in compliance with the essential
requirements and other relevant provisions of directives 2014/30/EU, 2014/35/EU,
2011/65/EU and (EU)2015/863.
The original EU declaration of conformity may be found at
https://www.mercusys.com/en/ce/
UK declaration of conformity
Keep the device away from water, fire, humidity or hot environments.
Do not attempt to disassemble, repair, or modify the device. If you need service,
please contact us.
Place the device with its bottom surface downward.
Do not use damaged charger or USB cable to charge the device.
Do not use any other chargers than those recommended.
Adapter shall be installed near the equipment and shall be easily accessible.
The plug on the power supply cord is used as the disconnect device, the
socket-outlet shall be easily accessible.
The PoE ports shall not be used to charge lithium batteries or devices supplied by
lithium batteries.
For MS110CMP only:
Mercusys hereby declares that the device is in compliance with the essential
requirements and other relevant provisions of the Electromagnetic Compatibility
Regulations 2016 and Electrical Equipment (Safety) Regulations 2016.
The original UK declaration of conformity may be found at
https://www.mercusys.com/support/ukca/
The socket-outlet shall be near the equipment and shall be easily accessible.
Plug the product into the wall outlets with earthing connection through the power
supply cord.