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Product comparison · 2 wireless routers

ASUS RT-AC51U wireless router Fast Ethernet Dual-band (2.4 GHz vs ASUS RT-AC55U wireless router Gigabit Ethernet Dual-band (2.4 GHz

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  • 29specifications compared
  • 14differ
  • 15identical
  • 25known for one product only

Key differences

  • WLAN data transfer rate (max)
    • 433 Mbit/s
    • 867 Mbit/s
  • Ethernet LAN interface type
    • Fast Ethernet
    • Gigabit Ethernet
  • Ethernet LAN data rates
    • 10,100 Mbit/s
    • 10,100,1000 Mbit/s
  • Cabling technology
    • 10/100Base-T(X)
    • 10/100/1000Base-T(X)
  • Ethernet LAN (RJ-45) ports
    • 5
    • 4
  • Cables included
    • LAN (RJ-45)
    • AC, LAN (RJ-45)
  • Depth
    • 129 mm
    • 148.8 mm
  • Height
    • 36 mm
    • 35.5 mm

Side by side

Differences highlightedShow differences only
54 specifications
A

ASUS

RT-AC51U wireless router Fast Ethernet Dual-band (2.4 GHz

Model RT-AC51U

View product
B

ASUS

RT-AC55U wireless router Gigabit Ethernet Dual-band (2.4 GHz

Model RT-AC55U

View product
WAN connectionidentical
Ethernet WANYesYes
Wireless LAN features1 differ
Wi-Fi bandDual-band (2.4 GHz / 5 GHz)Dual-band (2.4 GHz / 5 GHz)
Top Wi-Fi standardWi-Fi 5 (802.11ac)Wi-Fi 5 (802.11ac)
WLAN data transfer rate (max)Differs433 Mbit/s867 Mbit/s
Wi-Fi standards802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Network3 differ
Ethernet LANYesYes
Ethernet LAN interface typeDiffersFast EthernetGigabit Ethernet
Ethernet LAN data ratesDiffers10,100 Mbit/s10,100,1000 Mbit/s
Cabling technologyDiffers10/100Base-T(X)10/100/1000Base-T(X)
Networking standardsIEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11nIEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
VPN supportKnown for one- IPSec Pass-Through - PPTP Pass-Through - L2TP Pass-Through - PPTP server - OpenVPN server - PPTP client - L2TP client - OpenVPN client
DSL featuresidentical
Internal modemKnown for oneYes
Ports & interfaces1 differ
Ethernet LAN (RJ-45) portsDiffers54
DC-in jackYesYes
Management featuresidentical
Quality of Service (QoS) supportKnown for oneYes
Reset buttonYesYes
Web-based managementKnown for oneYes
Security1 differ
Security algorithmsDiffers128-bit WEP, 64-bit WEP, WPA, WPA-PSK, WPA2, WPA2-PSK, WPS128-bit WEP, 64-bit WEP, WPA-PSK, WPA2-PSK, WPS
FirewallKnown for oneYes
Stateful Packet Inspection (SPI)Known for oneYes
DoS attack preventionKnown for oneYes
Protocolsidentical
DHCP clientYesYes
DHCP serverKnown for oneYes
Supported network protocolsKnown for oneIPv4, IPv6
Universal Plug and Play (UPnP)Known for oneYes
Design1 differ
Product colourKnown for oneBlack
LED indicatorsDiffersYesLAN, Power, USB, WAN, WLAN, WPS
On/off switchKnown for oneYes
Packaging content1 differ
Cables includedDiffersLAN (RJ-45)AC, LAN (RJ-45)
AC adapter includedYesYes
ManualYesYes
Quick start guideYesYes
Antennaidentical
Antenna designKnown for oneInternal & external
Antennas quantityKnown for one3
Detachable antenna(s)Known for oneYes
Poweridentical
Power source typeKnown for oneAC
AC input voltage110 - 240 V110 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Weight & dimensions4 differ
DepthDiffers129 mm148.8 mm
HeightDiffers36 mm35.5 mm
WeightDiffers270 g495 g
WidthDiffers189 mm207 mm
Logistics dataidentical
Harmonized System (HS) codeKnown for one85176990
Other features2 differ
Frequency bandKnown for one2.4 & 5
Frequency range2.4 - 5 GHz2.4 - 5 GHz
USB ports quantityDiffers12
USB versionKnown for one2.0
WLAN data transfer rates supportedDiffers1,2,5.5,6,9,12,18,24,36,48,54,300,433 Mbit/s1,2,5.5,6,9,11,12,18,24,36,48,54,300,867 Mbit/s
Mobile network connectionKnown for oneYes
Bandwidth (first)Known for one2.4 GHz
Bandwidth (second)Known for one5 GHz
Mobile networkidentical
3GKnown for oneYes
4GKnown for oneYes
Certificatesidentical
Digital Living Network Alliance (DLNA) certifiedKnown for oneYes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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