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TRENDnet > 
Item#: 9SIA0AJ2TH1143

TRENDnet TDM-C504 4-Port ADSL 2/2+ Modem Router 1 x RJ11 WAN Ports 4 x 10/100Mbps LAN Ports

  • 1 x RJ11 WAN Ports
  • 4 x 10/100Mbps LAN Ports
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The 4-Port ADSL 2/2+ Modem Router, model TDM-C504, provides a modem for Internet access, a router for multiple Internet connections, and a 4-port switch to network computers and other devices.

This combination modem router supports Internet service providers with ADSL 2 and ADSL 2+ networks. Installation is a breeze with a step-by-step setup wizard. LEDs convey devices status and a convenient on/off power button protects hardware when powering down.

A firewall protects your valuable data. Manage access to the Internet with Port and MAC address filtering and URL and domain name blocking. Additional features include a browser-based management interface, SNMP v1 and v2c support, QoS data prioritization, DMZ controls, Port Forwarding, and DDNS support.

Learn more about the TRENDnet TDM-C504




Compliant with ADSL standards:
ANSI T1.413 Issue2
G.992.1 (G.dmt, Annex A)
G.992.2 (G.lite)

Compliant with ADSL2 standard: G.992.3 (G.dmt.bis, Annex L)

Compliant with ADSL2+ standard: G.992.5 Annex A and M

IEEE 802.3u 10/100Base TX Fast Ethernet.
TCP/IP,NAT, HTTP, DHCP Server/Relay/Client, DDNS, DNS Proxy, UPNP, RIP (v1 and v2)
WAN Ports
1 x RJ11
LAN Ports
4 x 10/100Mbps
Power, LAN: Link/ACT, ADSL, Internet.
5.7 x 4.4 x 1.1 in
9.9 oz.
5° - 45°C
Max. 90% (non-condensation)


Network Address Translation (NAT)
Stateful Packet Inspection (SPI)
Packet Filtering – IP, MAC, Domain
Management Access Control for LAN

Web based Configuration (HTTP)
Command Line Interface (CLI) via Telnet
SNMP v2c
IGMP v1 and v2
SW upgrade
ATM PVC Remote Management

Button: Reset, Power

Power: 9V DC 1A external power adapter

Power Consumption: 5 watts

Modem features:
Compliant with ADSL, ADSL2, and ADSL2+ (Annex A, L, and M) standards
Up to 24Mbps/1Mbps data rate downstream/upstream
Compliant with PPPoE, PPPoA, and IPoA connection types
Supports up to 8 PVCs

Router features:
Compliant with SNMP v2c standards and Supports IGMP v1 and v2, port forwarding, and DMZ controls.
Supports RIP (v1 and v2), Static routing, and Dynamic DNS service.
Advanced Firewall protection with Network Address Translation (NAT) and Stateful Packet Inspection (SPI).
Internet Access Control (MAC Address, Domain, URL, and IP Filtering) support.
Supports IP Quality of Service (QoS).
Easy configuration and remote management with a Web browser (HTTP) and CLI.
Universal Plug and Play (UPnP).
Application Level Gateway support for Internet applications such as email, FTP, gaming, remote desktop, telnet, and more.


Package Contents
Multi-Language Quick Installation Guide
CD-ROM (User's Guide)
Power adapter
Cat. 5 Ethernet cable (1.5 m / 5 ft.)
RJ-11 telephone cable (1.8 m / 6 ft.)

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the TRENDnet TDM-C504

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  • John R.
  • 4/10/2013 12:44:38 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsFLAWLESS

Pros: I noted DanW's comments. My C504 has worked flawlessly for several years. I have 3 computers and a printer connected to the 4 ports. The printer has a static address and the computers are variable. My DSL speed is the highest possible and no problems with connections at any time.

Cons: None.

Other Thoughts: I do guard against nearby lightening strikes and remove the phone line during bad rainstorms. In the past I have lost several modems because of line surge and induced voltage in the lines. An improvement to a modem would be a on-off switch for the phone line.... to be turned OFF during rainstorms.

Did you find this review helpful? Yes No

  • Daniel W.
  • 3/1/2013 6:18:07 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsNot worth the money

Pros: Easy install and setup

Cons: Used this to replace an older Trendnet ADSL Modem, howeverm it started loosing connection after a week, updated firmware, contacted support and nothing.
After a few months of dealing with this, I removed it (ate the cost) and installed a competitors product.

Other Thoughts: I have used Trendnet products for over 6 years and never had any issues like this.
Have since removed all Trendnet gear and replaced with Netgear / Cisco.
If you need stability, stay away from this product.

Manufacturer Response:

Valued Customer,

We are sorry for any inconvenience this may have caused you. Please contact us at, reference "New Egg Product Review" and someone will contact you in a timely manner to resolve your issue.


TRENDnet Sales Team

Did you find this review helpful? Yes No

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Item#: 9SIA0AJ2TH1143
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