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With an advanced 1.6 GHz dual-core CPU and an impressive 512MB of RAM, the WRT1900ACS delivers improvements in wired, wireless, and network storage performance over its predecessor, the WRT1900AC. At speeds up to N600 + AC1300 Mbps, the WRT1900ACS WiFi Router meets the needs of the most demanding home wireless networks. Equipped with a four-antenna configuration, the router provides exceptional signal strength and range. Advanced users also have the option of modifying the router with open source firmware.

Linksys WRT1900ACS
1.6 GHz Processor


With a professional-grade 1.6 GHz dual-core ARM processor, the WRT1900ACS delivers faster throughput speeds and easily handles multiple data streams simultaneously. The result: better performance, particularly in today's multi-device homes.


The WRT1900ACS comes equipped with 512MB of RAM that works in tandem with the 1.6GHz CPU to move movies, music, and other large files faster. With more than double the memory of its predecessor, the WRT1900ACS improves data transfer speeds, allowing you to do more, faster.

USB 3.0, ESATA, and Gigabit Ethernet


The WRT1900ACS has four Gigabit Ethernet ports that are perfect for transferring large media libraries at speeds 10X faster than Fast Ethernet. To stream or send large files across your network at high speed, simply connect a flash drive to the USB 3.0 port or an external SATA storage device to the eSATA port. The eSATA port also serves as a USB 2.0 port.

Linksys WRT1900ACS Ports


The WRT1900ACS features four external, adjustable high-performance antennas that provide strong, reliable coverage throughout your home. The unique antenna diversity technology onboard helps your laptop, tablet, smartphone, and other connected devices achieve an optimal connection, wherever they are in your home. The antennas also enhance coverage for both 2.4GHz and 5GHz bands, keeping everyone gaming, downloading, and streaming without lag.


Designed especially for today's mobile-device households, the WRT1900ACS features Beamforming technology, which focuses wireless signals at a receiving device rather than simply sending out WiFi in a general direction.

Open Source Ready


While the Linksys WRT1900ACS provides an outstanding experience via Smart WiFi immediately out of the box, advanced users can further modify the router with open source firmware. Developed for use with OpenWRT, an open source, Linux-based operating system, the router offers an additional layer of customization to suit your needs.


With Alexa, you can easily manage Wi-Fi access for devices and individuals in the home, taking focus away from screens and back to what’s important. Say commands like “Alexa, turn off Timmy’s Wi-Fi”, when it’s time for dinner or “Alexa, enable guest Wi-Fi” when you have people over.



With the Linksys Smart WiFi App, you can closely monitor and manage your home WiFi remotely using a smartphone or tablet.

  • Guest Access: Create a separate, password-protected WiFi network for up to 50 guests and easily share the password.
  • Parental Controls: Ensure a safe Internet experience for your kids -- even when you're away from home. Restrict access to inappropriate or distracting content, control usage, and block specific devices from accessing the Internet.
  • Device Prioritization: You can prioritize devices that need the most speed.


Managing your home WiFi with Linksys Smart WiFi is fast and easy:

Step 1 Set up your wireless home network

Set up your home WiFi using a Linksys Smart WiFi Router.

Step 2 Sign up for a Linksys Smart WiFi Account

Download the free Linksys Smart WiFi App.

Linksys Smart WiFi on iOS Get Linksys Smart WiFi on Google Play
Step 3 Customize your network with the Linksys Smart WiFi apps

Use Your Mobile Device to Manage Your Home WiFi.


The Linksys Smart Wi-Fi App has a Whole New Look & Feel

  • The Linksys Smart Wi-Fi App has a Whole New Look & Feel

Technical Specs
  • Wi-Fi Technology:
    AC1900 Dual-band Gigabit, 600+1300 Mbps
  • Network Standards:
    • 802.11b
    • 802.11a/g
    • 802.11n
    • 802.11ac
  • Wi-Fi Speed:
    AC1900 (N600 + AC1300)
  • Wi-Fi Bands:
    2.4 GHz and 5 GHz (simultaneous dual band)
  • Wi-Fi Range:
    Very large homes
  • Number of Ports:
    1x USB 3.0 port, 1x USB 2.0 port, 1x eSATA port
  • Number of Ethernet Ports:
    • 1x Gigabit WAN port
    • 4x Gigabit LAN ports
  • Antennas:
    4x external, dual-band, detachable antennas
  • Processor:
    1.6 GHz dual-core ARM-based
  • Memory:
    128MB Flash; 512MB DDR3 RAM
  • LEDs:
    Power, Internet, 2.4 GHz, 5 GHz, LAN 1–4 (10/100Mbps or 1Gbps), USB 3.0, USB 2.0, eSATA, Wi-Fi Protected Setup™
  • Wireless Encryption:
    64/128-bit WEP, WPA2 Personal, WPA2 Enterprise
  • VPN Support:
    PPTP Pass-Through
  • Operation Modes:
    • Wireless Router
    • Access Point
    • Wired Bridge
    • Wireless Bridge
    • Wireless Repeater
  • Storage File System Support:
    • FAT
    • NTFS
    • HFS+
  • Easy Setup:
    • Browser-based Setup
    • Linksys Smart Wi-Fi Setup
  • Certified Operating Systems:
    MacOS (10.X or higher), Windows 7, Windows 8.1, Windows 10
  • Minimum System Requirements:
    • Internet Explorer® 8
    • Safari® 5
    • Firefox® 8
    • Google Chrome™
  • Dimensions (LxWxH):
    246 x 194 x 52 mm (9.68 x 7.64 x 2.05 in.)
  • Weight:
    722.2 grams (28.43 oz)
  • Security Features:
    • WPA/WPA2
    • 128 bit AES link encryption
  • Regulatory Compliance:
    FCC class B
  • Other Certifications:
    • DNLA Certified
    • Wi-Fi Alliance
    • WPS Setup
  • Power Supply:
    Input: 100-240V ~ 50-60Hz; Output: 12V/3A
Package Contents
  • Linksys Dual-Band Gigabit Wi-Fi Router AC1900, WRT1900ACS
  • Quick Start Guide
  • CD-ROM with Documentation
  • 4 Antennas
  • Ethernet Cable
  • Power Adapter


Rated 3 out of 5 by from Where's wireless N? So it says it support wireless N. I have a Dell laptop with Intel(R) Centrino(R) Advanced-N 6205, my throughput on my speed test is barely at 2MB/S connected to 5Ghz. I'm also the same person that wrote the review of the EA8500 that I took back to BestBuy. Looks like I'll be taking this one back as well. I guess no more Linksys routers for me, two strikes so far. Here's my photos attached, the whopping 2.34MB connection is connected to 5Ghz and the better 73MB on 2.4G. How's that possible? If I enable TWC's Arris Modem's built in Wireless I get up to 133MB connection on N but I don't want to use the all in one from TWC. So, where's N mode? As i don't see it in the router settings.
Date published: 2016-02-22
Rated 5 out of 5 by from Powerful Wifi Router !!! I'm liking this new version WRT1900ACS with its new features Dual Core 1.6GHz, 128MB flash, & 512 !!!! MB DDR3 RAM !!!. I am currently running 4 pc's and 22 wifi devices connected with no drop. I'm glad I choose this new ACS over any other router out in the market. I also paired this ACS model with Linksys newest switches model WRT8 Ports Gigabyte & with the Linksys model SE3005 /5 ports.... I strongly believe I made the right choice. I would like to see Linksys built a big big FAT wifi router just for the looks. My last thought, good job Linksys ! WRT1900ACS is a winner..
Date published: 2015-10-15
Rated 1 out of 5 by from Always Needs to be Rebooted!! Very Disapointed Disappointment cannot even start to describe my feelings about this router. $250 waste of money. When it works it works great. Problem is that is less than 24 hours at a time, just about daily it slows or just loses connection for no reason. Everything works great after you reboot but wow this is $250 should not need to have to be rebooted daily or before you do anything important online. It just recently lost connection while I was taking an exam online. Caused me a great deal of problems because of it. This router might test out great but any place that gave it good reviews never used it for a 24 hours more less a week. At this point I want my money back.
Date published: 2016-04-09
Rated 4 out of 5 by from Powerful & Reliable, Lacks Features I tried and returned five comparable routers before settling on the WRT1900ACS (v2). The WiFi is always fast and reliable, and the signal is consistently strong across my medium-sized house. My only complaint is about the admin interface; there are still a few bugs that should be fixed in future firmware updates. For example, after upgrading the firmware, the OpenVPN settings get erased, and you must reset all settings to defaults in order to restore the OpenVPN functionality. Also, it would be nice to have more advanced control of various settings, such as pushing a custom search domain to LAN DHCP clients, rather than using the one obtained from ISP via WAN DHCP.
Date published: 2017-02-02
Rated 4 out of 5 by from Mostly Pleased with the WRT1900ACS I moved from the E3000 to the 1900ACS for two reasons and those were better parent controls and hopefully better wireless coverage. I am pleased with the results in both cases. However, improvements in the guest control feature as well as parental controls would make this a superb router for those needing such features. I have had to restart the router a few times to be able to access the wireless side of the router. Using three different wireless devices produced the same message "unable to authenticate". Once the router was restarted all devices were then able to use the wireless connection. Not really sure why this happens, but it has only happened 3 times in about a month.
Date published: 2016-01-03
Rated 5 out of 5 by from Easy setup, works great. I usually stay comfortably behind the technology curve at home (frugal and just don't care about the latest gadgets) but I bought this unit to serve my two new smart TV's (what was I thinking waiting so long for 1080p HD?) and it is great. I use computers every day at work but I am not well versed in setup or any system admin stuff. This router has simple setup instructions and it was very fast and easy to setup using the browser on my mac laptop. It is working perfectly and I am very pleased with it. I'd certainly recommend it.
Date published: 2015-12-07
Rated 5 out of 5 by from Major upgrade I upgraded to the WRT1900ACS router from a Cisco Linksys E4200. My internet is through U-verse on an NVG510 modem. Setting up the E4200 with the NVG510 was a complex project, and I expected the same hurdles with the WRT1900ACS. Anticipating that, I replicated the settings from the E4200, including setting the WRT1900ACS Internet Connection Type as Static, etc., etc. That ended up being a mistake. After Linksys tech support had me reset it to DHCP Auto Config and doing a reset, the entire network is working beautifully, including being able to establish connections to devices I had given up on. Major upgrade with unanticipated benefits.
Date published: 2016-10-15
Rated 5 out of 5 by from Easy Setup and Great Features It took me about 10 minutes to install and get connected to the internet opening the browser...didn't need to use the installation cd. The easiest router installation there can be. This router replaces my old one band WRT320n router and what a difference in the speed. Went from 300Mbps with the old router to 866Mbps with this one...(please see uploaded pics)....wow!, and this is on wireless not hardwired! The Smart Wifi has some very good tools to setup the router as you please. Streaming 9 devices at the same time and still getting the 866Mbps on my laptop without any problem.
Date published: 2016-03-31
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*The standard transmission rates—450 Mbps or 1300 Mbps (for 5 GHz), 600 Mbps (for 2.4 GHz), 54 Mbps, and 11 Mbps—are the physical data rates. Actual data throughput will be lower and may depend on the mix of wireless products used and external factors.
**While Linksys fully embraces the open source community and is providing open source use capabilities, they do not offer technical support on using open source firmware. Installing 3rd party firmware is done at your own risk and replacing factory-installed firmware with open source firmware will void your warranty. Please always seek the advice of more experienced users via open source community forums if you’re unsure.