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Asus RT-AC1900U router review

600 + 1300 Mbps
IEEE 802.11a/b/g/n/ac
Broadcom BCM4708C0 @ 1 GHz
256 MB / 128 MB

Asus introduced the RT-AC1900U router in 2018. It is powered by Broadcom BCM4708C0 @ 1 GHz chipset, 256 MB of RAM, and 128 MB of flash memory.

Want to know if the RT-AC1900U is a game-changer? Stay with us!

Table of Contents

  • Asus RT-AC1900U specifications
    • Body, dimensions, weight
    • System, chipset, RAM, flash, power supply
    • Network, protocols, WAN and LAN ports
    • Wireless, antennas, speed, security
    • Connectivity
    • Administration, user interface, login information
  • Verdict, Pros and Cons
  • Photos
  • Comparisons

Our personal experiences and opinions form the basis of this article. We aimed to share insights on a topic, and we hoped others would find it useful and inspirational. The specs below rely on official manufacturer data, but we also consider user reviews. If you noticed any mistakes or missing details about the Asus RT-AC1900U, please let us know. Furthermore, we strive to deliver a thorough and precise overview.

Asus RT-AC1900U / RT-AC1900U

The RT-AC1900U supports dual-band Wi-Fi, offering both 2.4 GHz and 5 GHz bands. The USB connectors on the router add versatility to your network. They enable file sharing, printer sharing, and other USB functions. Asus is a well-respected manufacturer in the networking industry. They have a reputation for providing a variety of networking devices.

Asus RT-AC1900U specifications

BrandAsus
NameRT-AC1900U
TypeRT-AC1900U
Rating
Rated 4/5 based on 1526 user votes.
Launch2018

Body

Dimensions218 x 45 x 148 mm
Weight660 g

If you have limited space, like in a small apartment or office, the dimensions can determine if it can fit there. The weight of router is not typically a critical factor for most home or office setups.

Asus RT-AC1900U (RT-AC1900U) / 3

System

ChipsetBroadcom BCM4708C0 @ 1 GHz
RAM256 MB
Flash128 MB
OSAsus
Power supply19 V / 1.75 A

The Broadcom BCM4708C0 @ 1 GHz CPU is key. It, along with factors like RAM and firmware, decides how well the router works. You cannot expand the router's memory (256 MB). When choosing a router, it is important to consider the RAM specifications. A larger flash memory allows for more space to store configuration backups. Upgrading router firmware has become simple and user-friendly. The Asus provides the right power supply. It is 19 V / 1.75 A, this matches the router's voltage needs.

Asus RT-AC1900U (RT-AC1900U) / 1

Network

ProtocolsIPv4
IPv6
LAN ports4 x 10/100/1000 Mbps
WAN ports1 x 10/100/1000 Mbps
Mobile networkyes, with USB dongle
VPN supportPPTP

The router supports many networking standards. It ensures compatibility with different devices and systems. Most networking equipment, like routers and switches, supports IPv4. The RT-AC1900U router is also compatible with IPv6. IPv6 has a much bigger address space. It also offers many enhancements and improvements over IPv4. The router has Gigabit Ethernet ports. They allow for faster communication between devices on your local network.

A Gigabit WAN port is helpful. It is useful when your internet plan supports high speeds. Connect the 3G/4G USB dongle to the RT-AC1900U router. Then, you can share the internet connection. You can share it with many devices on your local network. PPTP has known flaws. These include problems with the encryption and the risk of password cracking.

Asus RT-AC1900U (RT-AC1900U) / 2

Wireless

Antennas3 x 5 dBi
RP-SMA
2.4 GHzyes
5 GHzyes
60 GHzno
StandardsIEEE 802.11a/b/g/n/ac
ClassAC1900
Speed600 + 1300 Mbps
Transmit power20 dBm
SecurityWEP
WPA
WPA2
WPS
Guest networkyes

The 3 x 5 dBi, RP-SMA antennas allow sending and getting many data streams at once. This boosts overall throughput and improves Wi-Fi performance. Many IoT devices, smart home devices, and older Wi-Fi devices mainly use the 2.4 GHz band. To optimize your Wi-Fi experience, it's often recommended to use a combination of both 2.4 GHz and 5 GHz bands. This Wi-Fi router supports multiple spatial streams, typically up to 4 streams.

The top speed, 600 + 1300 Mbps, is the highest data rate the router can reach. It's the theoretical limit in perfect conditions. WEP was the first Wi-Fi security protocol. But it is now seen as weak and easy to hack. The introduction of WPA2 (Wi-Fi Protected Access 2) improved upon WEP. It provides stronger security. WPS (Wi-Fi Protected Setup) provides an easy method. It connects devices to a Wi-Fi network.

Connectivity

USB ports1 x USB 2.0
1 x USB 3.0
Print serveryes
File serveryes

The USB 2 port has a maximum theoretical data transfer rate of 480 megabits per second (Mbps). The USB 3 ports provide a fast interface for external storage with data transfer rates of up to 4.8 Gbps. A USB print server adds print functionality. You can manage settings, watch queues, and control access from one place. The RT-AC1900U router lets you schedule backups. You can back up to the connected USB storage device.

Administration

Default IP192.168.1.1
Default usernameadmin
Default passwordadmin

Changing the password often is a good security practice. It protects your network and devices from unauthorized access. Changing the default password improves your router's security. It reduces the risk of unauthorized individuals controlling your network.

Pros and Cons

Every router, including this Asus one, has its good sides and not-so-good sides. Let's take a closer look at both to get a full understanding of what this router can do. We'll talk about what it does well and also where it could use some improvements. Just remember, this is just what I think, and you might see things differently.

Pros

  • generous memory
  • adequate flash
  • IPv6 capable
  • high-speed LAN port
  • high-speed WAN port
  • 3/4G USB modem capable
  • works on 5 GHz band
  • decent Wi-Fi performance
  • WPS friendly
  • USB 2 compatible
  • USB 3 compatible
  • printserver functionality
  • fileserver operation

Cons

  • missing Wi-Fi 6 support
  • incompatible with WPA3

Asus RT-AC1900U photos

Asus RT-AC1900U / RT-AC1900U photo
Asus RT-AC1900U / RT-AC1900U photo
Asus RT-AC1900U / RT-AC1900U photo
Asus RT-AC1900U / RT-AC1900U photo
Asus RT-AC1900U / RT-AC1900U

Asus RT-AC1900U comparisons

We've noticed that many of our visitors like to compare the Asus RT-AC1900U router with these popular models.

Asus TUF Gaming AX4200 (TUF-AX4200) Asus TUF Gaming AX4200 Asus RT-N56U (RT-N56U) Asus RT-N56U Asus RT-AX89X (RT-AX89X) Asus RT-AX89X Asus RT-AC68P (RT-AC68P) Asus RT-AC68P

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Robert Miller
For over 15 years, I've immersed myself in the world of networking devices as a tech aficionado. I've dedicated myself to thoroughly testing and analyzing routers and other networking gear. I aim to provide thorough reviews. They will give you the knowledge needed to improve your network.
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