The Linksys WRT1900ACS can create four simultaneous yet separate Wi-Fi:
- The 2.4 GHz network caters to devices in your network that use 802.11b, 802.11g, and 802.11n technologies. This network can be used to connect your wireless devices to surf the internet, to share files, and to print.
- The 5 GHz network works best on devices that use 802.11a, 802.11n, and 802.11ac technologies. This network is ideal for heavy applications including Voice over IP (VoIP) calls, online gaming, and streaming high-definition videos.
- The 2.4 GHz and 5 GHz guest networks. These additional Wi-Fi networks allow your guests to have access to the internet but not on your local network and devices connected to it such as shared storage and printers.

- Engineered with a Dual-Core 1.6 GHz Central Processing Unit (CPU) for unparalleled speed.
- It is wall-mountable to ensure flexibility in the network environment. For instructions on how to wall-mount your router, click here.
- Setting up the Linksys WRT1900ACS is made fast and easy because of its CD-less setup. Now you can run the setup through a web browser. To know more about this, click here.
- Features Beamforming Technology for stronger and more focused Wi-Fi connections.
- It comes with four detachable high-performance external antennas for enhanced dual-band communication, maximum signal strength, and better coverage.
- Browser requirements:
- Microsoft® Edge
- Internet Explorer® 8 or higher
- Safari® 5 or higher (for Mac® or iPad®)
- Firefox® 8 or higher
- Google Chrome™ 10 or higher
- Certified Operating Systems:
- OS X® 10 or higher
- Windows® 7 or higher
- Dimensions:
- 246 x 194 x 52 mm (9.68 x 7.64 x 2.05 inches) without antennas
- Power Supply:
- Input: 100 - 240 V ~ 50 - 60 Hz
Indicator Lights | Image | Color | Activity | Description |
Power | ![]() | White | Solid white | The Power light is solid white when the router is powered ON. |
Blinking white | It will blink white when the router goes through its self-diagnostic mode during boot-up. | |||
Internet | ![]() | White / Orange | Solid white | The Internet light is solid white when connected to the internet. |
Blinking white | It blinks white while the router works to establish a connection. | |||
Solid orange | A solid orange light indicates the connection is down due to configuration issues. | |||
Blinking orange | Blinking orange light indicates that the connection is down due to hardware issues. | |||
2.4 GHz | ![]() | White | Solid white | The wireless light is solid white when one or more clients are connected to the 2.4 GHz network. |
Blinking white | If the light is blinking white, the router is sending or receiving data over the 2.4 GHz network. | |||
5 GHz | ![]() | White | Solid white | The wireless light is solid white when one or more clients are connected to the 5 GHz network. |
Blinking white | If the light is blinking white, the router is sending or receiving data over the 5 GHz network. | |||
eSATA | ![]() | White | OFF | The USB / eSATA light is OFF if no eSATA device is connected or a USB device is connected instead. |
Solid white | The light is solid white when an eSATA device is connected. | |||
Blinking white | A blinking white light indicates activity through the eSATA port. | |||
USB 1 | ![]() | White | OFF | The USB 1 light is OFF if no USB is connected or an eSATA device is connected instead. |
Solid white | The light is solid white when a USB device is connected. | |||
Blinking white | A blinking white light indicates activity on the port. | |||
USB 2 Primary | ![]() | White | OFF | The USB 2 Primary light is OFF if no USB 3.0 is connected. |
Solid white | The light is solid white when a USB device is connected. | |||
Blinking white | A blinking white indicates activity on the port. | |||
USB 2 Secondary | ![]() | White | OFF | The USB 2 Secondary light is OFF when a USB 1.0 or USB 2.0 device is connected. |
Solid white | A solid white light indicates a USB 3.0 device is connected. | |||
Ethernet 1 - 4 Primary | ![]() | White | Solid white | These numbered lights correspond with the numbered ports at the router’s back panel. If the white light is solid, a device is connected to the router through that port. |
Flashing white | A flashing white light indicates network activity over that port. | |||
Ethernet 1 - 4 Secondary | ![]() | White | OFF | If the white light is OFF, the router is successfully connected to a device through that port at 10/100 Mbps. |
Solid white | A solid white light indicates that the router is successfully connected to a device at 1000 Mbps. | |||
Wi-Fi Protected Setup™ (WPS) | ![]() | White / Orange | The WPS light blinks slowly for two minutes during the process. It will be solid white for five seconds to indicate a successful connection. The light blinks orange if the WPS process fails. Make sure that the client device supports WPS. Wait until the light is OFF, and then try again. The router supports one session at a time. |

- Below is the antenna positioning that is recommended for a multi-story home.

- Below is the antenna positioning that is recommended for a single-story home.


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Wi-Fi Protected Setup™ button – Press this to easily configure wireless security on WPS-enabled network devices.
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ETHERNET – Use ethernet cables to connect wired devices to these Gigabit (10/100/1000) ports. For best performance, use CAT5E or higher rated cables on the ethernet ports.
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INTERNET – Use an ethernet cable to connect a broadband internet modem to this yellow Gigabit (10/100/1000) port.
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USB 3.0 – Connect and share a USB drive or a printer on your network.
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USB I eSATA – Connect and share a USB 2.0 drive or an eSATA drive into this port. You can also connect a USB printer and share it across your network.
NOTE: You can only connect one device at a time. The Linksys WRT1900ACS supports SATA-II.
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RESET – Press and hold for 10 seconds then release. Alternatively, you can also reset the router using your Linksys Smart Wi-Fi Account. To do this, go to Troubleshooting > Diagnostics then select Reset under Factory reset.
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Power port – Plug the AC power adapter into this port.
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Power button – Press to switch the router ON or OFF.
Related Article:
Linksys WRT1900ACS Frequently Asked Questions