Linksys WRT1900AC Dual-Band Wi-Fi Router: features, specs and who it suits

The Linksys WRT1900AC is a dual-band Wi-Fi router from the line that made the WRT name familiar to people who like to tinker with their networks. It combines Wireless-AC, four adjustable antennas, a dual-core processor and storage ports with firmware that can be replaced by advanced users. This page explains what each spec means and who it is aimed at.

Two bands, and what the speeds mean

The router broadcasts on 2.4 GHz and 5 GHz at the same time. Linksys quotes speeds of up to 600 Mbps on 2.4 GHz and up to 1300 Mbps on 5 GHz, and says Wireless-AC is up to 4.3 times faster than N technology. Those are the maximum link rates under ideal conditions. Real-world throughput is typically lower and depends on distance, walls and the capabilities of each device.

In general, 2.4 GHz travels further and passes through walls better, while 5 GHz is faster over shorter distances and usually less crowded. Having both lets you put older or distant devices on one and streaming or gaming on the other.

Four antennas and beamforming

The four external, detachable antennas are adjustable, which Linksys says improves coverage and reliability in multi-level homes and small offices. Beamforming is the other half of that: instead of sending the signal evenly in all directions, the router concentrates it toward a specific device, which can help at the edge of its range.

Processor and wired ports

Inside is a 1.2 GHz dual-core ARM-based CPU. A faster processor generally matters when several people stream, game and transfer files at once, because the router has to handle all that traffic together. On the wired side, there are four Gigabit Ethernet ports, which Linksys describes as ten times faster than Fast Ethernet.

USB 3.0 and eSATA

The router includes a USB 3.0 port and a combined eSATA/USB 2.0 port. You can attach external drives to share files across the network. USB 3.0 is typically much faster than USB 2.0, and eSATA connects directly to external SATA drives. Actual transfer speeds depend on the drive and how the router shares it.

Smart Wi-Fi tools

Linksys's Smart Wi-Fi software covers a set of everyday controls: prioritising devices or websites, parental controls, monitoring network activity, turning Wi-Fi on or off, and creating password-protected guest networks. A Network Map gives a visual view of what is connected.

Open-source firmware

Linksys says the WRT1900AC is open-source ready and compatible with OpenWrt firmware, so advanced users can customise it beyond the stock software. That is optional; the stock firmware works without it, but it appeals to people who want finer control.

What's in the box and size

The package contains the router, four detachable dual-band antennas, a quick start guide, a CD-ROM with documentation, an Ethernet cable and a power adapter with cord. The router measures about 9.8 x 7.7 x 2.0 inches (25 x 19.6 x 5 cm) and weighs about 2.1 lb (0.95 kg).

Who it suits

It suits households and small offices that want a capable dual-band router, and hobbyists who like the option of alternative firmware.

What to check before you buy

• Your internet connection: it's a router, not a modem, so you need a modem or gateway from your provider.
• Device support: older devices may use only 2.4 GHz, and the full 5 GHz rate needs compatible AC devices.
• Newer standards: this is a Wireless-AC model, so it doesn't use Wi-Fi 6 or later.
• Placement: antenna position and central placement affect coverage.
• Storage use: check what file systems and sharing features the firmware supports before relying on attached drives.
• Firmware: follow the manufacturer's instructions on updates, and read the guidance carefully before installing any custom firmware.

The short version

• Dual-band Wireless-AC router: up to 600 Mbps (2.4 GHz) plus up to 1300 Mbps (5 GHz).
• Four adjustable antennas, beamforming and a 1.2 GHz dual-core ARM CPU.
• Four Gigabit Ethernet ports, USB 3.0 and combined eSATA/USB 2.0.
• Smart Wi-Fi tools, guest networks, parental controls and OpenWrt-ready firmware.

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