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Comtrend AR-5381u

details: 802.11n ADSL2+ Router
hardware type: DSL Wireless Router
date added: 2010-05-24
updated: 2014-11-17
The AR-5381u is an 802.11n (300Mbps) wireless ADSL2+ router. AR-5381u has four 10/100 Base-T Ethernet ports, a Wi-Fi switch button and one USB Host, which supports 3G USB dongle. The router provides WAN throughput of up to 24Mbps.

The integrated AP supports WEP and WPA/WPA2 wireless encryption and 802.1x authentication. It is WDS compatible and uses WMM (QoS) to prioritize the traffic over the network. A WPS button allows for easy wireless security configuration.

This router provides VPN pass-through for IPSec, L2TP and PPTP. It features a built-in firewall to protect the network from malicious attacks.
 AR-5381u Features
 Availability: currently available
 LAN / WAN Connectivity
 WAN throughput: 24 Mbps
 WAN throughput upstream: 1 Mbps
 WAN ports: 1
 WAN port(s) type: DSL/ISDN/POTS connector (RJ-11)
 LAN ports: 4
 LAN ports type: 10/100 Base-TX (RJ-45)
 LAN ports auto cross-over: yes
 USB port(s): 1
client PCs, support for 3G USB dongle
 NAT routing: yes
 Multihomed: yes
 Port forwarding: yes
 Port triggering: yes
 DHCP server: yes
 DHCP client: yes
 DHCP relay: yes
 DNS proxy: yes
 QoS: yes
 ToS / DiffServ: yes
 UPnP: yes
 Transparent Bridging (IEEE 802.1d): yes
 Routing Protocols: RIP v1 (static routing, RFC 1058)
RIP v2 (dynamic routing, RFC1389)
Spanning Tree Protocol (STP)
VLAN tagging (802.1q)
IGMP Multicast (RFC 1112)
 DSL compliance: ADSL1 (G.dmt 992.1, G.lite 992.2, G.hs 994.1, DMT T1.413)
ADSL2 (G.992.3, G.lite.bis 992.4)
ADSL2+ (G.992.5)
ADSL2+M (G.992.5 Annex M)
 PPPoE client: yes
 PPPoA client: yes
 Maximum Wireless Speed: 300 Mbps (Wi-Fi 4)
 WiFi standards supported: 802.11b (Wi-Fi 1)
802.11g (Wi-Fi 3)
802.11n (Wi-Fi 4)
 Wifi security/authentication: WEP
 WiFi modes: Access point
 WDS compatible: yes
 WMM (QoS): yes
 WPS (Wi-Fi Protected Setup): yes
 IPSec passthrough: yes
 L2TP passthrough: yes
 PPTP passthrough: yes
 Filtering: Domain/URL blocking, IP Address filtering, MAC Address filtering, packet filtering
 Device Management
 Default IP address:
 Default admin username: root
 Default admin password: 12345
 Administration: Web-based (LAN)
Remote configuration (WAN)
Quick Setup Wizard
Telnet / CLI
TFTP (RFC 1350)
 Firmware upgradeable: yes
 Configuration backup/restore: yes
 Misc hardware info
 SNMP support: SNMP v.2
 Product page:

Please use the Add Comment function below to review devices you have used (please be descriptive). If you find an error in our database, or have additional information about the product, please
  User Reviews/Comments:
by NHGadget - 2013-06-19 15:15
None of the specifications state what radio frequency(s) are used for the wireless. It has been working, and my daughter and son-in-law can even use their phones on it, but I expect to see on the device a frequency and mode specification. I am a licensed radio operator, and I know that the FCC requires some such notification. Where is it?
by Philip - 2013-09-29 02:00
As with all 802.11g and 802.11n devices, the RF operating frequency is the same (you can just look up the specs for allowed power levels).

802.11b, 802.11g, and 802.11n-2.4 utilize the 2.400 2.500 GHz spectrum. The 2.4 GHz band is divided into 14 channels spaced 5 MHz apart, beginning with channel 1 which is centered on 2.412 GHz. Channels 12-14 have additional restrictions and are not available in the US.
by atlatl - 2015-01-04 11:24
I have a model AR-5381u supplied by my local telephone company. I know that this company has set up the router per their own requirements but, my own monitoring software InSSIDer 4 shows the fastest data rate transfer as 144.4 Mbps and yet the spec. sheet shows 300Mbps.
Why the difference and is this spec. selectable ?
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