Aten VM3909H - 9x9 HDMI HDBaseT-Lite Matrix Switch


Matrix switcher 9x9 with HDMI inputs, mirrored HDMI and HDBaseT outputs. POH power supply by HDBaseT conecction by CatX cable.



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HDBaseT-HDMI matrix switcher that extends uncompressed 4K/Full HD digital video, audio, IR and power via HDBaseT technology through a single Cat 6a cable, up to 40/70 meters. It has 9 HDMI inputs and 9 mirrored HDMI/HDBaseT outputs.

When combined with VE805R/VE816R receivers, it supports both Seamless Switch technology and video wall functionality. Seamless switching technology uses an FPGA graphics processor to ensure seamless video transmission, real-time control and stable signal transmission across all sources. The videowall functionality allows you to create 18 videowall profiles for custom screen layouts through an easy-to-use web interface. Power over HDBaseT (POH) provides an intelligent way to power VE802R receivers via a CatX cable without the need for an additional power supply.

It offers flexibility with reliable, pushbutton-controlled signal distribution on the front panel and has IR, RS-232 and Ethernet (Telnet/Web User Interface) connections. It is designed as a functional integrated control system for residential, commercial and conference environments.

Aten VM3909H 9x9 HDMI-HDBaseT Matrix Features

  • Supports 9 HDMI inputs and 9 HDMI and HDBaseT mirror outputs
  • Mirror HDMI outputs can be used to verify the correspondence of the HDBaseT output or as an additional video display *.
  • HDBaseT connectivity - connects HDMI displays over long distances via a single Cat 5e/6/6a cable
  • Anti-interference HDBaseT - Resistant to signal interference during transmission of high quality video
  • Powered by HDBaseT (POH) - supplies power over long distances between the switch and a receiver via a single Cat 5e/6/6a cable ** / ***
  • Seamless Switching technology unifies video formats to provide continuous video streaming, real-time switching and stable signal transmission**. 
  • The videowall function - Allows you to create custom videowall layouts through an intuitive web GUI **
  • EDID Expert - selects the optimal EDID settings for good start-up, high quality displays and the use of the best video resolution across different displays
  • Multiple control methods - system management via front panel pushbuttons, IR, RS-232 and Ethernet connections (Telnet/Web graphical user interface)
  • Bidirectional IR channel ports supporting full frequency IR signals between 30KHz and 60KHz (the IR receiver cable included in the package only supports 30KHz to 56KHz)
  • Compatible with ATEN's LockPro HDMI cable lock to secure HDMI cables to the device
  • Firmware upgradeable
  • Rack mountable (2U Design)

* HDMI outputs cannot support video wall and clean cut switch functions.
** The semaless switch, video wall function and POH functions are only available when using a compatible receiver.
*** You can provide up to 15.4W at 48VDC of current per port and 75W of full current; make sure that the power consumption of the devices connected to the VM3909H does not exceed this limit.

Package contents

  • 1x VM3909H HDMI HDBaseT-Lite Matrix Switch
  • 1x Power Cord
  • 1x Mounting Kit
  • 1x User Instructions


Ficha informativa

Entradas Vídeo
Resoluções Suportadas
1920x1080 - HD
3840x2160 - UHD
4096x2160 - 4K DCI
Data and Control


Video Input

Impedance100 Ώ
Interfaces9 x HDMI Type A Female (Black)
Max. Distance1.8 m

Video Output

Interfaces9 x HDMI Type A Female (Black) ;
9 x RJ-45 Female
Impedance100 Ώ
Max. DistanceHDMI: up to 15 m
HDBaseT (Class B): 4K up to 35 m (Cat 5e/6) / 40 m (Cat 6a);
1080p up to 60 m (Cat 5e/6) / 70 m (Cat 6a)


Max. Data Rate10.2 Gbps (3.4 Gbps Per Lane)
Max. Pixel Clock340 MHz
ComplianceHDMI (3D, Deep Color, 4K); HDCP 1.4 Compatible
Consumer Electronic Control (CEC)
HDBaseT Compatible
Max. ResolutionUp to 4096 x 2160 / 3840 x 2160 @ 60Hz (4:2:0);
4096 x 2160 / 3840 x 2160 @ 30Hz (4:4:4)
Max. DistanceUp to 70 m


RS-232Connector: 1 x DB-9 Female (Black)
Baud rate and protocol:
Baud Rate: 19200, Data Bits: 8, Stop Bits:1, Parity: No, Flow Control: No
IR Channel9 x Mini Stereo Jack Female (Black);
30~60 KHz full range transmission
Ethernet1 x RJ-45 Female

EDID Settings

EDID Mode: Default / Port1 / Remix / Customized


Power1 x 3-Prong AC Socket


Maximum Input Power Rating100-240 VAC; 50-60 Hz; 1.0A

Power Consumption



Operating Temperature0-50°C
Storage Temperature-20 - 60°C
Humidity0 - 80% RH, Non-Condensing

Physical Properties

Weight7.33 kg ( 16.15 lb )
Dimensions (L x W x H)43.24 x 38.23 x 8.80 cm
(17.02 x 15.05 x 3.46 in.)
Rack Height (U Spaces)2U

Carton Lot

1 pc


For some of rack mount products, please note that the standard physical dimensions of WxDxH are expressed using a LxWxH format.

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