Atlona > Products > Switchers > Matrix Switchers > HDMI > Atlona HDMI 4 by 4 Matrix Switcher over a Single Category Cable

Atlona HDMI 4 by 4 Matrix Switcher over a Single Category Cable


With the latest and more affordable HDBaseT technology, extend HDMI sources up to 230ft at 1080p or 1920x1200. The Atlona HDMI 4 by 4 Matrix Switcher allows for effortless control of up to 8 devices through IR remote control, RS-232, 3rd party IR control box and the front panel. With a built in loop out S/PDIF port send audio to an AVR or Distribution Amp. To ensure all audio passes through, the 4 by 4 Matrix Switcher supports all Lossy and Lossless formats of Dolby and DTS over HDMI. PoCc Receivers are not included with the AT-PRO3HD44M.

Recommended Receivers:
AT-PRO3HDREC - IR, RS-232, PoCc, audio, and video
AT-HDRX-IR - Don't need RS-232? IR, PoCc, audio, and video
AT-HDWP-IR - US Wall plate with IR, PoCc, audio, and video
AT-HDWP-IR-UK - UK wall plate with IR, PoCc, audio, and video
AT-HDRX - Don't need control? PoCc, audio, and video
AT-HDWP - US Wall plate with PoCc, audio, and video
AT-HDWP-UK - UK Wall plate with PoCc, audio, and video


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  •   Overview
  •   Specifications
  •   Related
  •   Documentation
  •   Video
  •   FAQ
  •   Control
  •   Firmware

Go Further with More

  • Extend your audio/visual experience up to 230ft. HDBaseT allows you to send IR, RS-232, video (up to 1080p or 1920x1200) and audio (all Lossy and Lossless formats) signals over a single CAT5e/6/7 cable.

Power of One for All

  • Leave behind the power cable on your receiver. With the latest feature of Power over Category cable (PoCc) the PRO3HD44M transmits power to all the connected receivers over CAT cable.

Digital Audio Loop-Out

  • With a built in source S/PDIF loop out send your audio to an AVR or Amplifier for easy audio distribution. Compatible with PCM 2Channel, Dolby 2.0, Dolby Digital 5.1, and DTS 5.1.

Complete Control

  • Easily control the matrix via TCP/IP, RS-232, and GUI. Works with most major control systems. Bidirectional IR allows control of display and source through the same interface.
  • SDDP enabled for easy set up and compatibility with 3rd party control systems

No Device Left Behind

  • Ensure that even the most difficult display can receive audio and video with 4 programmable EDID memory presets loadable to any source connected to the matrix.

Additional Features

  • Powers compatible receivers over category cable: Power over Category cable (PoCc)
  • Supports pass through of all 3D formats
  • Locking HDMI port
  • Field serviceable firmware port
  • Includes dual purpose wall/rack mount ears, IR remote


Bandwidth 6.75Gbps Power Consumption 60W
Video Video: up to 1080p@60Hz
VESA: up to 1920x1200
(H x W x D)
1.69 x 17.13 x 10 (inch)
42.93 x 435.10 x 254 (mm)
Audio passes through up to Dolby TrueHD
or DTS-HD Master Audio
Weight 7lbs
Distance 230ft @ 1080p over CAT6a/7
197ft @ 1080p over CAT5e/6
Operating Temperature 32°F to 104°F
0°C to 40°C
Rack Size 1U Storage Temperature -4°F to 140°F
-20°C to 60°C
HDCP Compliant? Yes Certifications CE, FCC, RoHS, cULus for power supplies

Package Includes

• 1 x AT-PRO3HD44M • 1 x 24V/6.25A DC Adaptor
• 1 x Power Cord • 1 x IR Extender
• 1 x Remote Control • 5 x IR Emitter
• 1 x User Manual • 1 x Pair of Wall/Rack Mount Ears


V.2 (4/17/13)

V.3 (8/27/13)
 IR codes
 CAD files

Matrix EDID Management
  What is the difference between default, saved and internal EDID?
  • The default EDID is the combined EDID of all the displays attached to the matrix.
  • The saved EDID option will require that you do an EDID learn from your display.
  • The internal EDID (int) is a new feature that will force a predefined EDID (see manual for current EDID listings) to be pushed to the source.

  The receivers are getting hot, is this ok?
  It is normal for the receiver to be fairly warm during normal operation.

  What type of category cable should I use and why?
  While the matrix will work with cat5e we do recommend using cat6a/cat7 for optimal performance. We recommend using shielded and solid core cable if you are going to be running the cable in a high electronic noise or high RF noise area.

  Which receivers should I use with my AT-PRO3HD44M?

If you just need HDMI use the AT-HDRX
If you need HDMI and IR use the AT-HDRX-IR
If you need HDMI IR and RS-232 use the AT-PRO3HDREC
You can mix and match the receivers for your needs to different displays in the same system.

  Is there a recommended Telnet client to use with the new switches?
  Popular clients such as Putty and TeraTerm work freely with the new built-in telnet services.

  Which port number does Telnet use? Is it the same as SSH?
  Use standard port 23 for telnet control. SSH (port 22) is not implemented.

  Can I lock down remote access/control?
  Yes, both the web and telnet services can be password protected.

AT-PRO3HD44M Control Drivers

AMX RS-232 and TCP/IP Control
File Size 471 KB
Date 03.07.13

*SDDP Enabled*

Control4 RS-232 Control
File Size 2 KB
Control4 IR Control
File Size 2 KB
Date 9.12.12
Control4 2 Way RS-232 Control
File Size 64 KB
Date 02.13.13
Control4 TCP/IP Control
File Size 68 KB
Date 03.08.13

Crestron RS-232 and TCP/IP Matrix Control
File Size 3464 KB
Crestron RS-232 and TCP/IP Matrix & Zone Control
File Size 3852 KB
Date 04.12.13

Elan Available through Elan
Date 02.26.13

Neets IR and RS-232 Control
File Size 5 KB
Date 09.21.12

On Controls On Controls Web based control
Date 09.12.12

RTI RS-232 and TCP/IP control
File Size 480 KB
Date 1.28.14

Universal Remote Control CCP Accelerator RS-232 Control
File Size 2 KB
Date 11.28.12

AT-PRO3HD44M Firmware

Download Firmware version 2.0.05 Download Firmware version 2.0.06
File Size 208 KB File Size 208 KB
Date 10.18.13 Date 02.26.14
Update 2.0.05 Includes
      • Fixed double IP feedback issue
      • New WebGUI for setup and control
      • DHCP default on
      • SDDP support for Control4 integration

Firmware version 1.1.01
      • TCP/IP feature enabled
      • Added Internal EDID Mode for assigning EDIDs directly to an
      • Added RS-232 commands: Lock, Unlock, Version, Type and
      • Fixed failure issue with DVI EDID recording
      • Fixed bug that caused IR remote commands to fail when
        keylock was turned on
      • Fixed feedback for power on and power off commands to show
        correctly as PWON and PWOFF, followed by a carriage return
        and line feed

Firmware version 1.0.17 includes:
      • Improved HDCP stability

Update 2.0.06 Includes
      • Use with non-Ethernet units