Asus 4G-AC55U User manual

User Guide
4G-AC55U
Dual-Band Wireless-AC1200 LTE Modem Router

2
Copyright © 2015 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described
in it, may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language in any form or by any means, except
documentation kept by the purchaser for backup purposes, without the
express written permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired,
modified or altered, unless such repair, modification of alteration is authorized
in writing by ASUS; or (2) the serial number of the product is defaced or
missing.
ASUS PROVIDES THIS MANUAL “AS IS”WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS
AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR
PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE
FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE
AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A
COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY
FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL,
INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be
registered trademarks or copyrights of their respective companies, and are used
only for identification or explanation and to the owners’benefit, without intent
to infringe.
E10633
Second Edition V2
June 2015

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Table of contents
1 Getting to know your wireless router
1.1 Welcome! ...........................................................................................6
1.2 Package contents............................................................................6
1.3 Your wireless router .......................................................................7
1.4 Device Properties............................................................................9
1.5 Positioning your router.............................................................. 10
1.6 Installing your router.................................................................. 11
1.6.1 Prepare the setup requirements......................................11
1.6.2 Set up your LTE wireless router. .......................................12
2 Getting started
2.1 Quick Internet Setup (QIS) with Auto- detection............. 14
3 Quick Look your Wireless Router
3.1 Using the Network Map ........................................................... 19
3.1.1 Setting up the wireless security settings......................20
3.1.2 System Status .........................................................................21
3.1.3 Managing your network clients.......................................22
3.1.4 Monitoring the Internet Status ........................................24
3.1.5 Monitoring your USB device.............................................25
4 Configuring the Advanced Settings
4.1 Wireless............................................................................................ 26
4.1.1 General......................................................................................26
4.1.2 WPS ............................................................................................28
4.1.3 WDS............................................................................................30
4.1.4 Wireless MAC Filter ...............................................................32
4.1.5 RADIUS Setting .....................................................................33
4.1.6 Professional ............................................................................34
4.1.7 Guest Network .......................................................................37

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Table of contents
4.2 LAN.................................................................................................... 39
4.2.1 LAN IP ........................................................................................39
4.2.2 DHCP Server............................................................................40
4.2.3 Route .........................................................................................42
4.2.4 IPTV ............................................................................................43
4.2.5 Switch Control........................................................................43
4.3 WAN .................................................................................................. 44
4.3.1 Internet Connection.............................................................44
4.3.2 IPv6 (Internet Settings) .......................................................53
4.3.3 Dual WAN .................................................................................54
4.3.4 Port Trigger..............................................................................55
4.3.5 Virtual Server/Port Forwarding........................................57
4.3.6 DMZ............................................................................................60
4.3.7 DDNS .........................................................................................61
4.3.8 NAT Passthrough...................................................................62
4.4 Traffic Manager............................................................................. 63
4.4.1 QoS.............................................................................................63
4.4.2 Traffic Monitor........................................................................65
4.4.3 Setting up Parental Controls.............................................67
4.5 Firewall............................................................................................. 69
4.5.1 General......................................................................................69
4.5.2 URL Filter ..................................................................................69
4.5.3 Keyword filter .........................................................................70
4.5.4 Network Services Filter .......................................................70
4.5.5 IPv6 Firewall ............................................................................71
4.6 Using the USB Application ....................................................... 72
4.6.1 Using AiDisk ............................................................................72
4.6.2 Using Servers Center............................................................75
4.7 Download Master ........................................................................ 80
4.7.1 Configuring Bit Torrent download settings.................82

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Table of contents
4.7.2 NZB settings............................................................................83
4.7.3 eMule settings........................................................................83
4.8 Using AiCloud 2.0 ........................................................................ 84
4.8.1 Cloud Disk................................................................................85
4.8.2 Smart Access...........................................................................86
4.8.3 Smart Sync...............................................................................87
4.8.4 Sync Server..............................................................................88
4.8.5 Settings.....................................................................................91
4.9 Administration.............................................................................. 92
4.9.1 Operation Mode ....................................................................92
4.9.2 System.......................................................................................93
4.9.3 Firmware Upgrade................................................................95
4.9.4 Restore/Save/Upload Setting ...........................................96
4.10 System Log..................................................................................... 97
4.11 Ethernet WAN Mobile Broadband Function Support List98
5 Utilities
5.1 Device Discovery........................................................................100
5.2 Firmware Restoration ...............................................................101
5.3 Setting up your printer server...............................................102
5.3.1 ASUS EZ Printer Sharing .................................................. 102
5.3.2 Using LPR to Share Printer .............................................. 106
6 Troubleshooting
6.1 Basic Troubleshooting..............................................................111
6.2 Frequently Asked Questions (FAQs) ...................................113
Appendices
Notices .....................................................................................................122
ASUS Contact information..................................................................137
Networks Global Hotline Information.............................................138

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1 Getting to know your wireless
router
1.1 Welcome!
Thank you for purchasing an ASUS 4G-AC55U Wireless Router!
The powerful and stylish 4G-AC55U features 2.4GHz and 5GHz
dual bands for an unmatched concurrent wireless HD streaming;
SMB server, UPnP AV server, and FTP server for 24/7 file sharing;
a capability to handle 300,000 sessions; and the ASUS Green
Network Technology, which provides up to 70% power-saving
solution.
1.2 Package contents
NOTES:
• Ifanyoftheitemsisdamagedormissing,contactyourretaileror
ASUS for technical inquiries and support, Refer to the ASUS Support
Hotline list at the back of this user manual.
• Keeptheoriginalpackagingmaterialincaseyouwouldneedfuture
warranty services such as repair or replacement.
4G-AC55U Wireless Router AC adapter
Network cable (RJ-45) Quick Start Guide
Support CD (User Manual) SIM adapter
2 x 3G/4G antennas

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1.3 Your wireless router
3G/4G signal strength LED
1 lit LED: Weak signal
2 lit LEDs: Normal signal
3 lit LEDs: Strong signal
USB 2.0 LED
Off: No power or no physical connection.
On: Has physical connection to USB 2.0 devices.
LAN LED
Off: No data activity or no physical connection.
On: Ethernet connection is established.
2.4GHz Wi-Fi LED
Off: No 2.4GHz signal.
On: 2.4GHz wireless is ready.
Flashing: Transmitting or receiving data via wireless connection.
5GHz Wi-Fi LED
Off: No 5GHz signal.
On: 5GHz wireless is ready.
Flashing: Transmitting or receiving data via wireless connection.
WAN LED
Off: No data activity or no physical connection.
On: Has physical connection to a wide area network (WAN).
3G/4G Mobile Broadband LED
Off: No mobile broadband Internet connection.
Flashing: Establishing a LTE/Ethernet WAN connection.
On: Successfully established a Mobile Broadband Internet connection.
13 14 15 16 17
121 2 3 4 5 6 7 8 9 10 11
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3G/4G antenna
3G/4G antenna
Wi-Fi antenna

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NOTES:
• Useonlytheadapterthatcamewithyourpackage.Usingother
adapters may damage the device.
• EnsuretoinserttheSIMcardintothecardslotbeforepoweringon
the router.
Power LED
Off: No power.
On: Device is ready.
Flashing slow: Rescue mode
Flashing quick: WPS is processing.
SIM card slot
Install a USIM card with the bundled SIM adapter into this slot to establish a
Mobile Broadband Internet connection.
Mobile broadband signal button
Long press the button to show the signal strength. The number of LEDs (up to
10 LEDs) that light up indicate the signal strength.
WPS button
Long press the button to launch the WPS Wizard.
Power switch
Press this button to power on or off the system.
Power (DC-In) port
Insert the bundled AC adapter into this port and connect your router to a
power source.
USB 2.0 port
Insert USB 2.0 compatible devices such as USB hard disks or USB flash drives
into this port.
WAN port
Connect a network cable into this port to establish WAN connection.
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Wi-Fi On/Off button
Press this button to turn on /off the Wi-Fi connection.
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LAN ports
Connect network cables into these ports to establish LAN connection.
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Reset button
This button resets or restores the system to its factory default settings.

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1.4 Device Properties
Power Consumption:
• Input:AC230V/50HzV,DC19V/1.75A(EU)(UK)
• Maximumpowerconsumption:17.1W
• Averagepowerconsumption:11.4W
• Theaveragepowerconsumptionwasdeterminedatroom
temperature ( 23 °C to 27 °C ) with the following load:
 • ActiveMobileBroadbandconnection
 • WirelessLANon;nodevicesareconnectedtothewireless
LAN
 • OnenetworkdeviceisconnectedtoaLANport;nodata
transfer; no network devices are connected to the other
LAN ports
Ambient conditions:
DC Power adapter DC Output: +19V with max 1.75A current
Operating Temperature 0~40oCStorage Temperature 0~70oC
Operating Humidity 10 ~ 90% Storage Humidity 5 ~ 95%

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1.5 Positioning your router
For the best wireless signal transmission between the wireless
router and the network devices connected to it, ensure that you:
• PlacethewirelessLTErouternearawindowtoreceivethe
bestqualityformaximumwirelessupstreamperformance
withanLTEbasestation.
• Keepthedeviceawayfrommetalobstructionsandawayfrom
directsunlight.
• DonotplacetheWirelessLTERouterinadustyorwet
environment.
• Topreventsignalloss,keepthedeviceawayfrom802.11g
or20MHzonlyWi-Fidevices,2.4GHzcomputerperipherals,
Bluetoothdevices,cordlessphones,transformers,heavy-duty
motors,fluorescentlights,microwaveovens,refrigerators,and
otherindustrialequipment.
• Alwaysupdatetothelatestfirmware.VisittheASUSwebsiteat
http://www.asus.comtogetthelatestfirmwareupdates.
• Toensurethebestwirelesssignal,orientthetwodetachable
antennasasshowninthedrawingbelow.

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1.6 Installing your router
1.6.1 Prepare the setup requirements.
To set up your wireless network, you need to meet the following
requirements:
• AminiSIM/USIMcardwithWCDMAandLTEsubscription
IMPORTANT!
• Ensure that your SIM/USIM card is subscribed to WCDMA and LTE
services. Contact your mobile service provider about these services.
• Ifyouusea3rdpartyadapter,ensurethatyoucutotheportion
marked in red above to avoid stocking the SIM adapter in SIM slot.
CAUTION! Use only a standard SIM/USIM card with the bundled SIM
adapter on your router. Using a different form of SIM card type, such as
micro or nano SIM card, may result to a stuck SIM card and may damage
your router.
• AnADSL/cablemodemwithInternetsubscription
• AcomputerwithEthernetRJ-45(LAN)port(10/100/1000
Base-TX) or a Wi-Fi-enabled device with a 2.4 GHz and 5 GHz
802.11 a/b/g/n/ac wireless interface
• WebbrowsersuchasInternetExplorer,Firefox,Safari,or
Google Chrome

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1.6.2 Set up your LTE wireless router.
a. Attach the two 3G/4G antennas.
b. Insert the SIM/USIM card into the USIM card slot. When the
SIM/USIM card is properly installed, the Mobile Broadband
LED lights up and flashes slowly after power on. See Install
SIM/USIM card into your router.
c. Insert the AC adapter of your router to the DC-IN port and
plug it to a power outlet.
d. Turn on your router.
e. Using a network cable, connect your modem to the WAN port
of your router. When the network cable is properly connected,
the WAN LED lights up.
f. Insert the AC adapter of your modem to the DC-IN port and
plug it to a power outlet.
NOTE: You can use either 3G/4G or wired Ethernet connection for
Internet access.
g. Using the bundled network cable, connect your computer to
the LAN port of your router.
Computer
Wall Power Outlet
Modem
Power
WAN
c
e
d
f
b
LAN
g
aa

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2. Pull out the tray.
3. Place the SIM/USIM card on the tray and push the tray all the
way into the slot.
PIN hole Paper clip
Manually connecting to a wireless network
NOTE: Ensure that you press the Wi-Fi button on your router.
1. Enable the Wi-Fi function on your wireless client for it to
automatically scan for wireless networks.
2. Select the wireless network named “ASUS” or “ASUS_5G”,
which is the default wireless network name (SSID) of ASUS
wireless routers.
Installing SIM/USIM card into your router
NOTES:
• UseonlythebundledSIMadapter.
• AlwaysinserttheSIMadapterwithaMicroSIMcardorNanoSIM
card. The SIM adapter might get stuck if it is inserted alone.
Bundled SIM
Adapter 1
Micro SIM Bundled SIM
Adapter 2
Nano SIM
1. Find the SIM card tray at the side of the router.

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2 Getting started
2.1 Quick Internet Setup (QIS) with Auto-
detection
To set up your router using QIS (Quick Internet Setup):
1. Press the power button at the back of your router. Ensure that
the following LEDs light up:
• PowerLED • 2.4GHzWi-FiLED
• WANorMobile
Broadband LED
• 5GHzWi-FiLED
2. Launch your web browser such as Internet Explorer, Firefox,
Google Chrome, or Safari.
NOTE: If QIS does not launch automatically, enter http://192.168.1.1 or
http://router.asus.com in the address bar and refresh the browser again.
3. Log into the Web GUI. The QIS page launches automatically.
By default, the login username and password for your router’s
Web GUI is “admin”.

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4. Assign your router login name and password and click Next.
You need this login name and password to log into 4G-AC55U
to view or change the router settings. You can take note of
your router login name and password for future use.
5. If the WAN port is connected, the wireless router’s Quick
Internet Setup (QIS) feature automatically detects if your ISP
connection type is Dynamic IP, PPPoE, PPTP, L2TP, and
Static IP. Please obtain the necessary information from your
Internet Service Provider (ISP). If your connection type is
Dynamic IP (DHCP), QIS wizard will automatically direct you to
the next step.
for Automatic IP (DHCP)
The DHCP server automatically assigns the IP address.

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for PPPoE, PPTP, and L2TP
You need to key in the account name and password that you
obtained from your ISP for Internet connection.
for Static IP
You need to manually configure the IP address.
6. If a 3G/4G network is connected, the wireless router’s Quick
Internet Setup (QIS) feature automatically detects and applies
the APN setting to connect to the wireless base station. If the
QIS wizard failed to automatically apply the APN setting or
the SIM card prompts for a PIN code, set up the APN setting
manually.
NOTE: The PIN code may vary from different providers.

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7. The dual WAN connection configuration result is displayed.
Click Next to continue.
Mobile Broadband Connection is configured successfully
Ethernet WAN Connection is configured successfully
8. If both WAN are configured, go to next step to configure the
wireless LAN settings.

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9. Assign the network name (SSID) and security key for your
2.4GHz and 5GHz wireless connection. Click Apply when
done.
10. Your Internet and wireless settings are displayed. Click Next
to complete the QIS process.
11. The 3G/4G signal strength LED lights up and is steady after
completing the 3G/4G network settings via QIS, indicating a
successful Internet connection.

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3 Quick Look your Wireless Router
3.1 Using the Network Map
Network Map allows you to check the Internet connection status,
configure your network’s security settings, and manage your
network clients.

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3.1.1 Setting up the wireless security settings
Toprotectyourwirelessnetworkfromunauthorizedaccess,you
needtoconfigureitssecuritysettings.
To set up the wireless security settings:
1. From the navigation panel, go to General > Network Map.
2. OntheNetworkMapscreen,clickSystemstatusicon .
Youcanconfigurethewirelesssecuritysettingssuchas
wireless name(SSID),authentication method,and
encryption settings.
2.4GHz security settings 5GHz security settings