Mercusys AC12G User manual

User Guide
AC1300 Wireless Dual Band Gigabit Router
AC12G
Copyright © 2022 MERCUSYS REV2.0.0 1910080072

CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference,
in which case the user may be required to take adequate measures.
OPERATING FREQUENCY (the maximum transmitted power)
2400 MHz -2483.5 MHz (20 dBm)
5150 MHz -5250 MHz (23 dBm)
EU declaration of conformity
Mercusys hereby declares that the device is in compliance with the essential requirements
and other relevant provisions of directives 2014/53/EU, 2009/125/EC, 2011/65/EU and
(EU)2015/863.
The original EU declaration of conformity may be found at http://www.mercusys.com/en/ce
RF Exposure Information
This device meets the EU requirements (2014/53/EU Article 3.1a) on the limitation of exposure
of the general public to electromagnetic elds by way of health protection.
The device complies with RF specications when the device used at 20 cm from your body.
National Restrictions
Attention: This device may only be used indoors in all EU member states, EFTA countries and
Northern Ireland.
Attention: This device may only be used indoors in Great Britain.
AT BE BG CH CY CZ DE DK
EE EL ES FI FR HR HU IE
IS IT LI LT LU LV MT NL
NO PL PT RO SE SI SK UK(NI)
UK
UK Declaration of Conformity
Mercusys hereby declares that the device is in compliance with the essential requirements
and other relevant provisions of the Radio Equipment Regulations 2017.
The original UK declaration of conformity may be found at
https://www.mercusys.com/support/ukca/

Canadian Compliance Statement
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation,
Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject
to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux
CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils
radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :
1) L’appareil ne doit pas produire de brouillage;
2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
Industry Canada Statement
CAN ICES-3 (B)/NMB-3(B)
Korea Warning Statements
당해 무선설비는 운용중 전파혼신 가능성이 있음.
NCC Notice
󴱅󳞲󽘑
󱾬󳕅󲺄󹿠󸗏󴁩󱙴󱟼󱶧󵠈󲺹󹰞󲏝󴉿󽘜󹪬󶪅󴏮󱱆󽘜󱮷󱿡󲇢󷳋󳦕󱡋󵫞󶻰󲕓󱘗󳕅󳸓󷋩󸙗󴇠󹰞󵠈󱶩󲡱
󱶧󵠈󳦕󸙗󴇠󱽓󸎅󸌺󱙴󵙖󳘮󱾛󱶧󷃫󾗘
󱟼󱶧󵠈󲺹󹰞󲏝󴉿󱙴󱡋󵫞󱘗󳕅󳔈󹯁󹴔󷍵󲶾󱮭󱾛󳌢󳺀󱿷󴰢󸶲󱣭󾗝󶪅󵵏󵢮󴈄󳌢󳺀󵢮󸝭󴂸󽘜󳤑󶓉󱼑󱧃
󵫞󽘜󱘼󳻷󲉅󷋼󵎢󳌢󳺀󴂸󳿑󳕅󶱳󶲖󱡋󵫞󾗘
󱴙󸵄󱿷󴰢󸶲󱣭󽘜󳬘󱡽󹧖󱣭󶙸󵢻󴰢󸉫󲷢󱠓󴘀󱙴󵎢󶬢󹧖󸶲󱣭󾗘
󱟼󱶧󵠈󲺹󹰞󲏝󴉿󹯎󳖞󱾭󱿷󴰢󸶲󱣭󳦕󳉉󴘀󶋑󲶙󱾛󹃔󵳟󵫞󹧖󴰻󸯷󲺹󳘮󹧖󴟅󸎅󱨴󱙴󳌢󳺀
󳤑󸺺󱭾󳔈󹯁󹢂󸳼󹧎󸹈󶥚󶩁󱙴󳸝󱠓󾗘
󺂿󲝿󵷅󳬘󲀃󳘮󲡵󶬢󱿌󳕅󳤑󵫞󳿕󲓠󲷢󳑎󺝫󲻊󺝫󶥚󶩁󾗘
BSMI Notice
󲶾󱮭󸔊󸏪󱾛󴱅󳞲󱛓󹯋
Ǵ󸒾󱡋󵫞󱽓󸄅󹧖󴻣󱡹󳤑󲏝󳦕󱿌󷃫󳬞󵐲󴉆󵫕󲄘󴱅󴁩󵵙󹧖󴻣󽕧󲖸󱡋󵫞󴉆󵫕󲄘󾗘
Ǵ󴸂󵁆󴉆󵫕󲄘󱙴󱴙󸒾󱭴󳫍󳯩󹧖󴻣󶬢󸒾󱹂󱡋󵫞󴵫󺂳󲏲󹨳󴸂󵁆󱶎󳦕󵄩󳉳󸷮󸀅󴸂󵁆󾗘
Ǵ󴱅󳞲󹡩󵁱󽘜󸒾󱹂󲺿󴬱󳦕󱯇󱝎󴵫󺂳󵀾󵈕󱳭󴉆󵫕󲄘󱘔󾗘
Ǵ󳱤󴜖󷌥󹝻󱿂󱡹󸶲󹲰󱡋󵫞󽘜󱝥󶃘󱣣󴉆󵫕󲄘󵵙󳸝󱠓󱿔󹪲󱘼󹡩󴦛󸸵󵓈󽘜󸒾󱹂󲛈󲜒󳦕󸉜󷤨󹝻󱿂󾗘
Ǵ󸒾󱹂󲺿󴉆󵫕󲄘󶷉󳻿󳿕󹪲󸳼󵓈󴻣󵵙󲔲󳿑󹢲󹪬󴈄󴦜󳋃󵵙󸶲󹲰󽘜󲀥󱴒󱘗󱿔󳻿󲔩󲸺󹝸󱟺󶷉󱙆󾗘
Ǵ󱘗󸉔󶊺󷋩󳪳󹝻󴟅󴩞󳦕󷋩󸀅󶪿󱣾󽘜󲤖󵫕󲄘󴈄󳼇󹤜󸒾󷌥󱽓󳏷󳦕󱝠󵢻󲇢󶿂󶱐󾗘

設備名稱：AC1300 Wireless Dual Band Gigabit
Router
Equipment name
型號（型式）：AC12G
Type designation (Type)
單元
Unit
限用物質及其化學符號
Restricted substances and its chemical symbols
鉛
Lead
(Pb)
汞
Mercury
(Hg)
鎘 Cadmium
(Cd)
六價鉻
Hexavalent
chromium
(Cr+6)
多溴聯苯
Polybrominated
biphenyls
(PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)
PCB ○ ○ ○ ○ ○ ○
外殼 ○ ○ ○ ○ ○ ○
電源供應
器—○ ○ ○ ○ ○
天線 ○ ○ ○ ○ ○ ○
備考 1.〝超出 0.1 wt %〞及〝超出 0.01 wt %〞係指限用物質之百分比含量超出百分比含量基準值
Note 1: “Exceeding 0.1 wt %” and “exceeding 0.01 wt %” indicate that the percentage content of the restricted
substance exceeds the reference percentage value of presence condition.
備考 2.〝○〞係指該項限用物質之百分比含量未超出百分比含量基準值。
Note 2: “○” indicates that the percentage content of the restricted substance does not exceed the percentage of
reference value of presence.
備考 3.〝－〞係指該項限用物質為排除項目。
Note 3: The “−” indicates that the restricted substance corresponds to the exemption.
Продукт сертифіковано згідно с правилами системи УкрСЕПРО на відповідність
вимогам нормативних документів та вимогам, що передбачені чинними законодавчими
актами України.
Safety Information
Ǵ Keep the device away from water, re, humidity or hot environments.
Ǵ Do not attempt to disassemble, repair, or modify the device. If you need service, please
contact us.
Ǵ Do not use damaged charger or USB cable to charge the device.
Ǵ Do not use any other chargers than those recommended
Ǵ Do not use the device where wireless devices are not allowed.
Ǵ Adapter shall be installed near the equipment and shall be easily accessible.
Ǵ Use only power supplies which are provided by manufacturer and in the original packing
of this product. If you have any questions, please don't hesitate to contact us.
Please read and follow the above safety information when operating the device. We cannot

guarantee that no accidents or damage will occur due to improper use of the device. Please
use this product with care and operate at your own risk.
Operating Temperature: 0°C~40°C (32°F~104°F)
This product uses radios and other components that emit electromagnetic elds.
Electromagnetic elds and magnets may interfere with pacemakers and other implanted
medical devices. Always keep the product and its power adapter more than 15 cm (6 inches)
away from any pacemakers or other implanted medical devices. If you suspect your product
is interfering with your pacemaker or any other implanted medical device, turn o your
product and consult your physician for information specic to your medical device.
Explanation of the symbols on the product label
Symbol Explanation
DC voltage
Class II equipment
Polarity of d.c. power connector
Energy eciency Marking
Indoor use only
Caution
Operator’s manual
RECYCLING
This product bears the selective sorting symbol for Waste
electrical and electronic equipment (WEEE). This means that this
product must be handled pursuant to European directive 2012/19/
EU in order to be recycled or dismantled to minimize its impact on
the environment.
User has the choice to give his product to a competent recycling
organization or to the retailer when he buys a new electrical or
electronic equipment.

CONTENTS
Conventions ...............................................................................................................01
Chapter 1 Introduction ..........................................................................................02
1.1 Product Overview..............................................................................................................02
1.2 Product Appearance........................................................................................................02
1. 2. 1 The Front Panel.....................................................................................................02
1. 2. 2 The Rear Panel ......................................................................................................02
Chapter 2 Connect to the Internet.....................................................................04
2. 1. Position Your Router.........................................................................................................04
2. 2. Connect to the Internet ..................................................................................................04
2. 2. 1. Router Mode...........................................................................................................05
2. 2. 2. Access Point Mode..............................................................................................06
Chapter 3 Log In to the Router............................................................................08
Chapter 4 Router Mode .........................................................................................09
4.1 Operation Mode.................................................................................................................09
4.2 Network.................................................................................................................................10
4. 2. 1 Status .......................................................................................................................10
4. 2. 2 Internet.....................................................................................................................11
4. 2. 3 MAC Clone..............................................................................................................16
4. 2. 4 NAT ............................................................................................................................17
4. 2. 5 LAN ...........................................................................................................................17
4. 2. 6 IPTV/VLAN..............................................................................................................18
4. 2. 7 DHCP Server..........................................................................................................18
4. 2. 8 Dynamic DNS.........................................................................................................20
4. 2. 9 Static Routing........................................................................................................21
4.3 Wireless ................................................................................................................................24
4. 3. 1 Wireless Settings.................................................................................................24
4. 3. 2 Guest Network ......................................................................................................25
4. 3. 3 Wireless Schedule...............................................................................................26
4. 3. 4 WPS...........................................................................................................................27
4. 3. 5 Additional Settings..............................................................................................28
4. 3. 6 WDS ..........................................................................................................................30

4.4 NAT Forwarding .................................................................................................................32
4. 4. 1 Port Forwarding....................................................................................................32
4. 4. 2 Port Triggering ......................................................................................................34
4. 4. 3 UPnP .........................................................................................................................35
4. 4. 4 DMZ...........................................................................................................................36
4.5 Parental Controls...............................................................................................................38
4.6 QoS.........................................................................................................................................41
4.7 Security.................................................................................................................................42
4. 7. 1 Firewall .....................................................................................................................42
4. 7. 2 Access Control .....................................................................................................42
4. 7. 3 IP & MAC Binding..................................................................................................44
4. 7. 4 ALG............................................................................................................................45
4.8 IPv6.........................................................................................................................................46
4.9 System ..................................................................................................................................49
4. 9. 1 Firmware Upgrade ...............................................................................................49
4. 9. 2 Backup & Restore.................................................................................................49
4. 9. 3 Change Password................................................................................................50
4. 9. 4 Local Management..............................................................................................50
4. 9. 5 Remote Management.........................................................................................51
4. 9. 6 HTTP Referer Head Check ...............................................................................53
4.10 System Log .........................................................................................................................53
4. 10. 1 System Log..........................................................................................................53
4. 10. 2 Diagnostics..........................................................................................................54
4. 10. 3 Time........................................................................................................................55
4. 10. 4 Reboot...................................................................................................................56
4. 10. 5 LED Control .........................................................................................................57
Chapter 5 Access Point Mode .............................................................................58
5.1 Operation Mode.................................................................................................................58
5.2 Firmware Upgrade.............................................................................................................59
5.3 Backup & Restore..............................................................................................................59
5.4 Administration ....................................................................................................................60
5. 4. 1 Change Password................................................................................................60
5. 4. 2 Local Management..............................................................................................61

5. 4. 3 HTTP Referer Head Check ...............................................................................62
5.5 System Log .........................................................................................................................62
5.6 Diagnostics..........................................................................................................................62
5.7 Time........................................................................................................................................64
5.8 Reboot...................................................................................................................................65
5.9 LED Control .........................................................................................................................66
Appendix A: FAQ (Frequently Asked Questions) .............................................67
Appendix B: Conguring the PC...........................................................................69

01
AC1300 Wireless Dual Band Gigabit Router
AC12G
Conventions
The Router, or AC12G, mentioned in this User Guide stands for AC1300 Wireless Dual
Band Gigabit Router without any explanations.
Parameters provided in the pictures are just references for setting up the product,
which may dier from the actual situation.
You can set the parameters according to your demand.
More Info
Specications and the latest software can be found at the product page at the ocial
website http://www.mercusys.com.
The Quick Installation Guide can be found where you nd this guide or inside the
package of the router.
Speed/Coverage Disclaimer
*Maximum wireless signal rates are the physical rates derived from IEEE Standard
802.11 specications. Actual wireless data throughput and wireless coverage are not
guaranteed and will vary as a result of 1) environmental factors, including building
materials, physical objects, and obstacles, 2) network conditions, including local
interference, volume and density of trac, product location, network complexity, and
network overhead, and 3) client limitations, including rated performance, location,
connection, quality, and client condition.
**Use of MU-MIMO requires clients to also support MU-MIMO. §Use of WPA3 requires
clients to also support the corresponding feature.
***Use of WPA3 requires clients to also support the corresponding feature.

02
Chapter 1
Chapter 1 Introduction
1.1 Product Overview
AC12G delivers blazing fast Wi-Fi speeds up to 1300 Mbps. Choose the 2.4 GHz band
(400 Mbps) for internet browsing, email, and social media or the 5 GHz band (867
Mbps) for bandwidth-intensive tasks like HD streaming and gaming.
1.2 Product Appearance
1. 2. 1 The Front Panel
The router’s LEDs are located on the front panel (View from left to right).
Name Status Indication
SYS
Off Power is off or the router is not working properly.
On The router is working properly.
WIFI
Off The wireless function is disabled.
On The wireless function is working properly.
WAN
Off The WAN port is not connected.
Flashing The WAN port is transmitting/receiving data.
On The WAN port is connected.
LAN
Off No LAN port is connected to a powered-on device.
On At least one LAN port is connected to a powered-on device.
1. 2. 2 The Rear Panel

03
Chapter 1
The following items are located on the rear panel (View from left to right).
Item Description
1-3(LAN) These ports connect the router to the local devices.
WAN This port is where you will connect the DSL/cable Modem, or Ethernet.
Power The power socket is where you will connect the power adapter. Please use the
power adapter provided with this router.
WPS/RESET Button Press this button for 1 second to use WPS function.
Press and hold this button for more than 5 seconds to reset the router.
Wireless Antennas To receive and transmit the wireless data.

04
Chapter 2
Chapter 2 Connect to the Internet
2. 1. Position Your Router
• The product should not be located in a place where it will be exposed to moisture or
excessive heat.
• Place the router in a location where it can be connected to multiple devices as well as to
a power source.
• Make sure the cables and power cord are safely placed out of the way so they do not
create a tripping hazard.
• The router can be placed on a shelf or desktop.
• Keep the router away from devices with strong electromagnetic reference, such as
Bluetooth devices, cordless phones and microwaves.
Generally, the router is placed on a horizontal surface, such as on a shelf or desktop. The
device also can be mounted on the wall as shown in the following figure.
∅
D
L2 H
NOTE:
4.5<D<6.3;
H<2.8;
L2>9.5
154.38
4
6.85
11.17
1
1.4
3
6.85
Note:
The diameter of the screw, 4.5 mm<D<6.3 mm. The distance of two screws is 154.38 mm. The screw that project from the wall
need around 2.8 mm based, and the length of the screw need to be at least 9.5 mm to withstand the weight of the product.
2. 2. Connect to the Internet
The Router provides two working modes: Router Mode and Access Point Mode. You can
choose the mode to better suit your network needs and follow the guide to complete the
configuration.

05
Chapter 2
2. 2. 1. Router Mode
In this mode, the router can provide internet access for multiple wired and wireless devices.
This mode is required most commonly.
1. Follow the steps below to connect your router.
If your Internet connection is through an Ethernet cable from the wall instead of through a
DSL/Cable/Satellite modem, connect the Ethernet cable directly to the router’s Internet/
WAN port, then connect the power adapter to the router.
1 ) Turn off the modem, and remove the backup battery if it has one.
2 ) Connect the modem to the router’s WAN port with an Ethernet cable.
3 ) Connect the power adapter to the router.
4 ) Turn on the modem, and then wait about 2 minutes for it to restart.
2. Connect your computer to the router.
• Method 1: Wired
Turn off the Wi-Fi on your computer and connect the devices as shown below.
• Method 2: Wirelessly
1 ) Find the SSID (Network Name) printed on the label at the bottom of the router.
2 ) Click the network icon of your computer or go to Wi-Fi Settings of your smart device,
and then select the SSID to join the network.

06
Chapter 2
3. Enter http://mwlogin.net in the address bar of a web browser. Create a password to log
in.
Note:
If the above screen does not pop-up, it means that your IE Web-browser has been set to a proxy. Go to menu Tools >
Internet Options > Connections > LAN Settings, in the screen that appears, untick the Using Proxy checkbox, and click
OK.
4. Follow the Quick Setup to set up the internet connection.
5. Enjoy! For wireless devices, you may have to reconnect to the wireless network if you
have customized the SSID (wireless name) and password during the configuration.
2. 2. 2. Access Point Mode
In this mode, the router changes an existing wired network into a wireless one.
1. Connect the power adapter to the router.
2. Connect the router’s WAN port (recommended) to your wired host router’s LAN port via
an Ethernet cable as shown above.

07
Chapter 2
3. Connect a computer to the router via an Ethernet cable or wirelessly by using the SSID
(network name) printed on the bottom label of the router.
4. Enter http://mwlogin.net in the address bar of a web browser. Create a password to log
in.
Note:
If the above screen does not pop-up, it means that your IE Web-browser has been set to a proxy. Go to menu Tools >
Internet Options > Connections > LAN Settings, in the screen that appears, untick the Using Proxy checkbox, and click OK.
5. Click Change Mode in the top right corner and select Access Point Mode. Wait for the
router to reboot.
6. Follow the Quick Setup to set up the internet connection.
7. Enjoy! Connect to the wireless network by using the SSID (network name) and password
of the router.

Chapter 3
08
Chapter 3 Log In to the Router
This chapter introduces how to log in to the web management page of the router.
With the web-based utility, it is easy to configure and manage the router. The web-based utility
can be used on any Windows, Macintosh or UNIX OS with a Web browser, such as Microsoft
the Internet Explorer, Mozilla Firefox or Apple Safari.
Follow the steps below to log in to your router.
1. Set up the TCP/IP Protocol in Obtain an IP address automatically mode on your computer.
2. Visit http://mwlogin.net, and log in with the password you set for the router.
Note:
If the login window does not appear, please refer to the FAQ section.

09
Chapter 4
Chapter 4 Router Mode
This chapter presents how to configure the various features of the router working as a
wireless router.
It contains the following sections:
• Operation Mode
• Network
• Wireless
• NAT Forwarding
• Parental Controls
• QoS
• Security
• IPv6
• System
4.1 Operation Mode
1. Visit http://mwlogin.net, and log in with the password you set for the router.
2. Go to Advanced > Operation Mode.
3. Select the Router Mode and click SAVE.

10
Chapter 4
4.2 Network
4. 2. 1 Status
1. Visit http://mwlogin.net, and log in with password you set for the router.
2. Go to Advanced > Network > Status. You can view the current status information
of the router.
• Internet - This eld displays the current settings of the internet, and you can
congure them on the Advanced > Network > Internet page.
• Status - Indicates whether the router has been connected to the internet.
• Internet Connection Type - Indicates the way in which your router is
connected to the internet.
• IP Address - The WAN IP address of the router.
• Subnet Mask - The subnet mask associated with the WAN IP address.
• Default Gateway - The Gateway currently used is shown here.
• Primary & Secondary DNS - The IP addresses of DNS (Domain Name
System) server.
• LAN - This eld displays the current settings of the LAN, and you can congure
them on the Advanced > Network > LAN page.
• MAC Address - The physical address of the router.
• IP Address - The LAN IP address of the router.

11
Chapter 4
• Subnet Mask - The subnet mask associated with the LAN IP address.
• DHCP Server - This eld displays the current settings of DHCP (Dynamic Host
Conguration Protocol) Server, and you can congure them on the Network >
DHCP Server page.
• DHCP Server - Indicates whether the DHCP server is enabled of disabled. It
is enabled by default and the router acts as a DHCP server.
• IP Address Pool - The IP address range for the DHCP server to assign IP
addresses.
• Dynamic DNS - This eld displays the current settings of the Dynamic DNS
(Domain Name System), and you can congure them on the Advanced > Network
> Dynamic DNS page.
• Service Provider - The Dynamic DNS service provider you have signed up
for.
• Host Name - The Domain Name you have entered in the Dynamic DNS page.
• Status - The status of the Dynamic DNS service connection.
4. 2. 2 Internet
1. Visit http://mwlogin.net, and log in with the password you set for the router.
2. Go to Advanced > Network > Internet.
3. Set up the internet connection and click SAVE.
Dynamic IP
If your ISP provides the DHCP service, please select Dynamic IP, and the router will
automatically get IP parameters from your ISP.
Click RENEW to renew the IP parameters from your ISP.

12
Chapter 4
Click RELEASE to release the IP parameters.
• MTU Size - The normal MTU (Maximum Transmission Unit) value for most Ethernet
networks is 1500 Bytes. It is not recommended that you change the default MTU
size unless required by your ISP.
• Host Name - This option species the name of the router.
• Get IP with Unicast DHCP - A few ISPs’ DHCP servers do support the broadcast
applications. If you cannot get the IP address normally, you can choose this option (it is
rarely required).
Static IP
If your ISP provides a static or xed IP address, subnet mask, default gateway and
DNS setting, please select Static IP.