Asus RT-AC51U+ router review
Asus introduced the RT-AC51U+ router in 2017. It is powered by MediaTek MT7620A @ 580 MHz chipset, 64 MB of RAM, and 16 MB of flash memory.
Want to know if this Asus router stands out? Stay tuned!
Table of Contents
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-AC51U+, please let us know. Furthermore, we strive to deliver a thorough and precise overview.
The RT-AC51U+ is a versatile router that offers more than basic functionality. It has advanced features and capabilities. It provides a reliable, fast network for homes and offices. This router has USB connectors. They add features and expand your network's capabilities. Asus is another well-known manufacturer in the networking industry.
Asus RT-AC51U+ specifications
| Brand | Asus |
|---|---|
| Name | RT-AC51U+ |
| Type | RT-AC51UP |
| Rating | |
| Launch | 2017 |
Body
| Dimensions | 189 x 129 x 36 mm |
|---|---|
| Weight | 270 g |
If you plan to move or travel a lot and need to take your router with you, the size is important. It needs to be small to be easy to carry. If you purchase a router online or have it shipped, the weight may affect the overall cost.
System
| Chipset | MediaTek MT7620A @ 580 MHz |
|---|---|
| RAM | 64 MB |
| Flash | 16 MB |
| OS | Asus |
| Power supply | 12 V / 1 A |
The MediaTek MT7620A @ 580 MHz CPU provides processing power. It handles tasks and services within the RT-AC51U+ router. Some router features and software need a certain amount of RAM. They need it to work well. More storage space comes from a larger flash memory. It can accommodate future firmware upgrades. The firmware upgrade process may vary depending on the router model. However, it often involves accessing the router's web-based administration interface. The Asus packages the RT-AC51U+ router with 12 V / 1 A PSU.
Network
| Protocols | IPv4 IPv6 |
|---|---|
| LAN ports | 4 x 10/100/1000 Mbps |
| WAN ports | 1 x 10/100/1000 Mbps |
| Mobile network | yes, with USB dongle |
| VPN support | PPTP L2TP OpenVPN |
The RT-AC51U+ router has built-in security features. They protect your network and devices. The IPv4 uses 32-bit addresses, represented as four sets of numbers separated by periods (e.g. 192.168.0.1). The router also supports IPv6. This allows you to use the latest Internet Protocol. If you have a 1 Gbps or faster internet plan, you need gigabit Ethernet ports. They are essential to use all the available bandwidth.
This router ensures that you can use fast internet from your ISP fully. You can connect the 3G/4G USB dongle to the USB port on the RT-AC51U+ router. OpenVPN uses a certificate-based authentication system. This enhances security and provides a stronger method of identity verification. PPTP uses the Password Authentication Protocol (PAP). It also uses the Challenge Handshake Authentication Protocol (CHAP) for user authentication.
Wireless
| Antennas | 2 x 5 dBi RP-SMA |
|---|---|
| 2.4 GHz | yes |
| 5 GHz | yes |
| 60 GHz | no |
| Standards | IEEE 802.11a/b/g/n/ac |
| Class | AC750 |
| Speed | 300 + 433 Mbps |
| Transmit power | 18.5 dBm |
| Security | WEP WPA WPA2 WPS |
| Guest network | yes |
A well-positioned antenna can reduce interference and signal weakening. This leads to a more reliable connection. The RT-AC51U+ is compatible with 2.4 GHz Wi-Fi networks. Using the 5 GHz band can move some devices from the crowded 2.4 GHz band. This cuts congestion and boosts the network. The AC Wi-Fi router is backward compatible with older Wi-Fi devices that support 802.11a/b/g/n standards. Real-world RT-AC51U+ router speeds are lower than its theoretical maximum speed.
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 ports | 1 x USB 2.0 |
|---|---|
| Print server | yes |
| File server | yes |
The USB 2 port has a maximum theoretical data transfer rate of 480 megabits per second (Mbps). By connecting a USB printer to the RT-AC51U+ router, you can make it accessible to all devices on your network. This router has a USB file server. It lets you connect external storage devices to your network. For example, you can connect USB flash drives or hard drives.
Administration
| Default IP | 192.168.1.1 |
|---|---|
| Default username | admin |
| Default password | admin |
If you can't log in to your Asus router's setup panel, try resetting it. A reset can help you troubleshoot. It is highly recommended to change the default password of your RT-AC51U+ router. Do this after the initial setup.
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
- lightweight
- sufficient memory
- IPv6 capable
- high-speed LAN port
- high-speed WAN port
- 3/4G USB modem capable
- supports OpenVPN
- works on 5 GHz band
- WPS friendly
- USB 2 compatible
- printserver functionality
- fileserver operation
Cons
- insufficient flash
- missing Wi-Fi 6 support
- incompatible with WPA3
Asus RT-AC51U+ photos
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