ASUS RT-AC51U Fast Ethernet Black wireless router
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Sponsored ASUS RT-AC51U wireless router Fast Ethernet Dual-band (2.4 GHz / 5 GHz) Black
47.99 GBP
Price updated on: 23-12-2025 22:37:59
47.99 GBP
Price updated on: 23-12-2025 22:37:59
Sponsored ASUS RT-AC51U wireless router Fast Ethernet Dual-band (2.4 GHz / 5 GHz) Black
52.19 GBP
Price updated on: 05-08-2024 07:30:21
52.19 GBP
Price updated on: 05-08-2024 07:30:21 | Identifiers | |
|---|---|
| Model | ASUS RT-AC51U |
| MPN | ASUS RT-AC51U |
| Dimensions / Weight | |
| Key Features | |
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AC adapter included Indicates whether the product comes with an AC power adapter included in the package. A value of "Yes" means a charger is supplied, while "No" indicates that no charger is provided and the user must obtain one separately.
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Yes |
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AC input frequency The frequency of the alternating current supplied to the device, expressed in hertz (Hz). It indicates the acceptable operating range for the electrical mains that powers the product.
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50 - 60 Hz |
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AC input voltage The alternating current voltage range that the product accepts from its power source, expressed in volts (V). It indicates the minimum and maximum supply voltages compatible with the device.
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110 - 240 V |
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Antenna The total count of antenna units present on the device, regardless of type or orientation. This value indicates how many separate antennas are installed and can help assess potential signal coverage and performance.
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5 dBi antenna x 2 |
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Antenna type The classification of an antenna used in a device, indicating its physical configuration or mounting style such as external, internal, integrated, directional, omnidirectional, or multi‑antenna setups (e.g., "2x2", "4 x External"). It helps buyers understand how the antenna is attached and what signal coverage it may provide.
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Internal & external |
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Antennas quantity The total count of antenna units present on a device or system. It indicates how many separate antennas are installed and can help assess potential signal coverage and performance.
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3 |
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Bands A comma‑separated list of the radio frequency bands that a device can receive or transmit, such as 2.4 GHz, 5 GHz, LTE Band 3, or 5G NR n78. The values are free text and may include band names, numeric frequencies, or both.
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Dual Band |
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Cables included A list of the cable types that are supplied with the product, such as USB, HDMI, VGA, DisplayPort, LAN (RJ‑45), SATA, audio or other relevant connectors.
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LAN (RJ-45) |
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Cabling technology The type of cable or connector technology used by the product, such as Ethernet standards (e.g., 10/100Base‑T, 1000BASE‑T, 10GBase‑T) or other networking cable types. It indicates the physical medium and protocol supported for data transmission.
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10/100Base-T(X) |
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Colour The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.
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Black |
| DC-in jack | Yes |
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Depth The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.
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129 mm |
| Detachable antenna(s) | Yes |
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Device type The general classification of a product, such as tablet, smartphone, router, or computer. It indicates the primary function or form factor that helps buyers quickly identify and compare similar items.
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N/A |
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DHCP Client Indicates whether a device supports the DHCP client function, meaning it can automatically request an IP address and related network settings from a DHCP server.
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Yes |
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DHCP client Indicates whether the device supports the DHCP client function, meaning it can automatically request an IP address and related network settings from a DHCP server.
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Yes |
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DHCP server Indicates whether the device supports acting as a DHCP server, allowing it to assign IP addresses and network configuration settings to clients on the network.
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Yes |
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Ethernet LAN Indicates whether the product includes an Ethernet LAN interface for wired network connectivity, allowing data transmission over RJ‑45 or compatible cables.
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Yes |
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Ethernet LAN interface type Indica el tipo o estándar de la conexión Ethernet que posee un producto, como Gigabit Ethernet, 10 GbE, 2.5 GbE, Fast Ethernet, etc. Los valores suelen ser textos descriptivos sin unidades numéricas y pueden incluir varias opciones separadas por comas cuando el dispositivo soporta más de una velocidad.
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Fast Ethernet |
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Ethernet LAN ports Represents the total count of Ethernet LAN (RJ‑45) interfaces available on a product. The value is an integer indicating how many physical Ethernet ports are present, regardless of speed or generation.
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5 |
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Ethernet WAN Indicates whether the device has an Ethernet port on its WAN side, allowing connection to a wired network for internet access or other external networks.
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Yes |
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Firewall Indicates whether the device includes an integrated firewall that filters and protects network traffic.
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No |
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Frequency The operating frequency of a device or component, expressed in hertz (Hz). It represents the number of cycles per second that the product’s internal circuits or wireless radios can run and is useful for comparing performance across similar products.
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2.4 GHz 5 GHz |
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Height The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.
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36 mm |
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Internal modem Indicates whether the product includes a modem that is installed inside the device, such as an integrated cellular or Wi‑Fi module. A value of "Yes" means the modem is built into the chassis; "No" indicates it requires an external accessory.
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Yes |
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LED indicators A list of the functions or statuses that an LED indicator on a device can display, such as power status, activity, link, and other operational signals.
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Yes |
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Manual Indicates whether a user manual—physical or digital—is provided with the product. A value of "Yes" means that a manual is included, while a value of "No" indicates that no manual is supplied.
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Yes |
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Maximum WLAN data transfer rate The highest theoretical speed at which a device can send or receive data over a wireless network, expressed in megabits per second (Mbps). It represents the peak throughput under optimal conditions and is useful for comparing performance across routers, access points, and other Wi‑Fi equipment.
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433 Mbit/s |
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Networking standards A list of the networking protocols and standards that a device can support or comply with, such as IEEE 802.11 variants for wireless, IEEE 802.3 for Ethernet, or other relevant networking specifications. The values are typically separated by commas and may include both technical identifiers and consumer‑friendly labels.
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IEEE 802.11a,IEEE 802.11ac,IEEE 802.11b,IEEE 802.11g,IEEE 802.11n |
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On/off switch Indicates whether the product includes an on/off switch that allows the user to power it on or off manually.
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Yes |
| Other Connectors | 1 x USB 2.0 |
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Power source type The type of electrical supply that powers the device, such as mains electricity, batteries, USB power, or a combination of these options.
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AC |
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Quality of Service support Indicates whether a product supports Quality of Service (QoS) features, which allow prioritization and management of network traffic to ensure optimal performance for critical applications.
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Yes |
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Quick start guide Indicates whether a quick‑start guide is provided with the product. A value of "Yes" means that a brief, introductory manual or overview is included to help users get started quickly; "No" indicates that no such guide is supplied.
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Yes |
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Reset button Indicates whether the device has a physical reset button that restores factory settings or original configuration when pressed.
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Yes |
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Security algorithms Una lista de los algoritmos criptográficos y protocolos de seguridad que el producto soporta, como cifrado (AES, WEP), autenticación (WPA2-PSK, EAP-TLS) o protocolos de red (HTTPS, SSH). Cada elemento describe un algoritmo individual; la lista puede contener varios valores separados por comas.
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128-bit WEP,64-bit WEP,WPA,WPA-PSK,WPA2,WPA2-PSK,WPS |
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Security Protocols A list of network security protocols that a device supports, such as WEP, WPA‑PSK, WPA2‑PSK, WPA‑Enterprise, WPA3, IPsec, SSL/TLS, 802.1x, and other authentication or encryption methods. The value is typically a comma‑separated string of protocol names.
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802.1x WEP (128 bit) WEP (64 bit) WPA-Enterprise WPA-PSK WPA2-Enterprise WPA2-PSK WPS |
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Supported network protocols A list of network communication protocols that a device can use or support, such as TCP/IP, HTTP, HTTPS, FTP, DHCP, DNS, and various wireless standards. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.
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IPv4, IPv6 |
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Top Wi-Fi standard A list of the wireless networking protocols and frequency bands that a device can connect to, such as IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac) or Wi‑Fi 6 (802.11ax). The values are typically separated by commas and may include both the technical name and a consumer‑friendly label.
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Wi-Fi 5 (802.11ac) |
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Total LAN Connections The count of physical Ethernet (LAN) ports available on a networking device, such as routers, switches, or access points. This value indicates how many wired network interfaces the product can provide for connecting computers, servers, or other devices.
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4 |
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Total WAN Connections The total count of independent Wide Area Network (WAN) interfaces that a networking device can support simultaneously. This value indicates how many separate internet or external network connections the device is capable of handling at once, regardless of their type (e.g., Ethernet, DSL, cable). It helps users understand the device’s capacity for load balancing, fail‑over, or multi‑service connectivity.
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1 |
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USB version The specific version of the USB standard that a product supports, expressed as a generation number and optional descriptive suffix (e.g., "3.2 Gen 1" or simply "3.0"). This attribute indicates the data‑transfer capabilities and compatibility with USB devices.
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2.0 |
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VPN Support A list of the VPN protocols that a device can establish, such as PPTP, L2TP, IPSec, OpenVPN, and related pass‑through or server modes. The values are typically separated by commas and may include variations like "IPSec Pass‑Through" or "OpenVPN Server" to indicate specific capabilities.
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IPSec Pass-ThroughL2TP Pass-ThroughPPTP serverOpenVPN serverOpenVPN client |
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Weight The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.
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270 g |
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Wi-Fi standards A list of the wireless networking protocols and frequency bands that a device can connect to, such as 802.11a, 802.11b, 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac) or Wi‑Fi 6 (802.11ax). The values are typically separated by commas and may include both the technical name and a consumer‑friendly label.
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802.11a,Wi-Fi 5 (802.11ac),802.11b,802.11g,Wi-Fi 4 (802.11n) |
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Width The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
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189 mm |
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Wireless Protocols A textual list of the wireless protocols and standards that a device supports, such as IEEE 802.11a/b/g/n/ac/ax, PoE (IEEE 802.3af/at), LTE bands, or other radio‑frequency technologies. The value may contain multiple entries separated by spaces or commas.
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IEEE 802.11a IEEE 802.11ac IEEE 802.11b IEEE 802.11g IEEE 802.11n IPv4 IPv6 |
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Wireless Speed The maximum data transfer rate that a device can achieve over its wireless interface, expressed in bits per second or common abbreviations such as Mbps or Gbps. This value indicates how quickly the device can send and receive information wirelessly.
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733 (300+433) Mbps |
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WLAN data transfer rates supported The highest theoretical speed at which a device can send or receive data over its wireless network interface, expressed in megabits per second (Mbps), kilobits per second (Kbps) or gigabits per second (Gbps). It represents the peak throughput achievable under optimal conditions and allows users to compare the performance of different Wi‑Fi devices.
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1,2,5.5,6,9,12,18,24,36,48,54,300,433 Mbit/s |

Asus is a Taiwanese electronics company that produces a wide range of products, including laptops, desktops, mobile phones, tablets, and servers. Asus is best known for its laptops, which are often praised for their quality, features, and design.





