4K/UHD Five-Input HDMI Switcher


Model Number: AT-UHD-SW-51

  • 4K/UHD capability
  • Automatic input selection using video detection technology
  • TCP/IP, RS-232, and IR control
  • EDID management
  • HDCP management
  • Easy, GUI-based configuration using integrated web server
  • ARC – Audio Return Channel


This product is designed to work with AMS. Please see AT-SW-AMS for more information.


4K/UHD, 5-Input HDMI Switcher

4K/UHD, 5-Input HDMI Switcher

The Atlona AT-UHD-SW-51 is a 5×1 HDMI switcher with auto-switching and advanced control capability. The switcher supports 4K/UHD @ 60 Hz with 4:2:0 color, offers 3D pass-through, and 10.2 Gbps bandwidth. With front panel buttons and IR control, it can be a standalone switcher. Designed as a cost-effective, easy to install solution, the switcher offers a web-based GUI for easy set-up and management of EDID and HDCP. Additional control options include auto-switching, front panel selector, and compatibility with RS-232 or TCP/IP-based control systems. Audio features include de-embedding of PCM audio over HDMI to either S/PDIF or two-channel analog audio outputs; pass-through of Dolby TrueHD® and DTS-HD Master Audio™; plus an Audio Return Channel feed to the S/PDIF output from the HDMI display. The compact, 1U, half-rack width enclosure is easily installed in rack mounted systems with the 19” rack mount brackets. Two units can be mounted side-by-side.

Reliable Auto-Switching

The AT-UHD-SW-51 automatically selects an input source based on detection of the 5 volt hot plug detect (HPD) signal, as well as active video. This ensures reliable auto-switching operation for all video sources, including DVRs, DisplayPort / Mini DisplayPort adapters, and other devices that always maintain the HPD line at the 5 volt “high” state but may not be delivering active video.

4K/UHD 5×1 Switcher

The AT-UHD-SW 51 adds 4K/UHD performance to Atlona’s HDMI small switcher family to meet the needs of displays and sources with resolutions beyond 1080p. In addition, the switcher offers advanced audio features. Auto-switch, the additional TCP/IP control flexibility, and overall control system neutrality give integrators a significant time savings during installation.

The AT-UHD-SW-51 is ideal for use in applications where:

  • 4K video switching must be added to AV systems with upgraded 4K displays and sources that were designed around a high end audio processor/switcher limited to 1080p.
  • Installers need a no-nonsense, cost-effective 5×1 HDMI switcher with 4K/UHD support for easily-managed applications with multiple sources and one display for corporate and residential applications that will work with any control system.

Configured and Managed by AMS

The AT-UHD-SW-51 also supports the Atlona Management System (AMS), a powerful network software platform that integrates product configuration, management and updating. Specially designed for IP-controllable Atlona Products, the Atlona Management System reduces installation time and enables remote monitoring and support. To learn more please visit AT-SW-AMS.


4K/UHD capability

  • Compatible with Ultra High Definition sources and displays
  • Supports high-resolution applications such as CAD, desktop publishing, and detailed financial reporting
  • Supports up to HDCP 1.4 (Does not support HDCP 2.2 devices)

Automatic input selection using hot plug detect and video detection technology

  • Selects active input when sources are connected or if there is a change in source power status
  • Eliminates need for complex control system in AV systems

TCP/IP, RS-232, and IR control

  • Flexible control options compatible with 3rd-party control systems
  • Reduces integration time and costs

EDID management

  • Manages EDID communications between source and destination; allows integrators to force sources to preferred resolution
  • Ensures desired audio formats and video resolutions are provided to the AV system; eliminates the need for EDID management device

HDCP management

  • HDCP compliance can be switched on/off from control systems for use with non-compliant displays, streaming devices, and codecs
  • Allows non-protected material from PCs to pass to non-compliant displays and teleconference systems while protected content is not transmitted

Easy, GUI-based configuration using integrated web server

  • Offers menu-based configuration of network settings, RS-232 settings, input switching, EDID, and HDCP management and audio
  • Allows fast configuration of internal product settings and troubleshooting from a tablet, smart phone, or PC in the field

ARC – Audio Return Channel

  • Audio is returned from the remote display via HDMI to the S/PDIF or analog audio outputs
  • Allows ARC-enabled TVs, such as smart TVs, to transmit audio back to an AV receiver through the same HDMI cable used to connect the input

Multi-channel audio compliant

  • Supports PCM, Dolby® Digital, Dolby Digital Plus™, Dolby TrueHD, Dolby Atmos®, DTS Digital Surround™, and DTS-HD Master Audio™
  • Allows any multi-channel audio stream to be used within a professional audio system

Rack-mountable, 1U, half rack width enclosure

  • Installs easily in rack-mounted systems with 19” rack mount brackets.
  • Simplifies installations; allows two units to be mounted together.

Included accessories

  • User guide, desktop power supply, detachable power cable, IR hand held remote control

Award-winning 10 year limited product warranty

  • Ensures long-term product reliability and performance in residential and commercial systems
  • Specify, purchase, and install with confidence


What is Auto-Switching and why is it Important to my Application?

Atlona is proud to introduce the new line of 5×1 HDMI Switchers for 2015!
These new switchers share some common features across the board. To begin with, they each support Ultra HD 4K resolutions @ 60Hz. Additionally, they offer 3D pass-through and 10.2 Gbps bandwidth. Also, with front panel buttons and IR control, they can be used as a standalone switcher.
Video 4096×2160@24/25/30/50*/60Hz*, 3840×2160@24/25/30/50*/60Hz*, 2048x1080p, 1080p@23.98/24/25/29.97/30/50/59.94/60Hz, 1080i@50/59.94/60Hz, 720p@50/59.94/60Hz, 576p, 576i, 480p, 480i
VESA 2560×2048, 2560×1600, 2048×1536, 1920×1200, 1680×1050, 1600×1200, 1600×900, 1440×900, 1400×1050, 1366×768, 1360×768, 1280×1024, 1280×800 1280×768, 1152×768, 1024×768, 800×600, 640×480
Colorspace YUV, RGB
Chroma Subsampling 4:4:4, 4:2:2, 4:2:0
Color depth 8-bit, 10-bit, 12-bit
HDMI IN/OUT PCM 2Ch, LPCM 5.1, LPCM 7.1, Dolby Digital, DTS 5.1, Dolby Digital+, Dolby TrueHD, DTS-HD Master Audio
S/PDIF PCM 2Ch, Dolby Digital, DTS 5.1
L/R Audio maximum analog output: balanced +5dBu @ 0dBfs, 2Ch PCM only
Sample Rate 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
HDMI IN/OUT @ 4K up to 5 meters up to 15 feet
HDMI IN/OUT @ 1080p up to 10 meters up to 30 feet
Bandwidth 10.2 Gbps
CEC Pass through
  • Switchable – Compliant/Non compliant
  • Supports up to HDCP 1.4 (Does not support HDCP 2.2 devices)
  • Connector
    Firmware Mini-B USB
    HDMI Type A
    Digital Audio S/PDIF
    Analog Audio L/R RCA
    LAN RJ45 (8P8C), TCP/IP control
    RS-232 3-pin captive screw
    Power 2-pin, 5V captive screw
    Operating 0°C to 50°C 32°F to 122°F
    Storage -20°C to 60°C -4°F to 140°F
    Humidity 20 to 90% non-condensing
    Consumption 5.94W
    Idle Consumption 1.57W
    Supply Input: AC100~240V 50/60Hz
    Output: DC 5V/3.6A
    H x W x D 44 x 222.25 x 261 (mm) 1.73 x 8.75 x 10.28 (inch)
    Rack Unit 1/2 rack, 1RU
    Unit 3.10kg 1.40lbs
    Power Supply CE, FCC, cULus, RCM
    Unit CE, FCC

    4096×2160@50/60Hz & 3840×2160@50/60Hz supported @ chroma subsampling 4:2:0 8-bit only



    pdf-icon Datasheets
    pdf-icon Manual V.3 (12/2016)
    pdf-icon Tech Tips
    word-doc-icon IR Codes


    pdf-icon FAQ

    Diagrams, Drawings & CAD Files

    cad-icon-(1) CAD Files

    Declarations Of Conformity

    pdf-icon Declarations Of Conformity

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    AT-UHD-SW-51 Firmware

    Firmware Version 1.3.1
    Revision C
    File Size 560 KB
    Date 11.13.15

    Update includes:

    • Older intel graphics cards no longer signal when inputs are changed of the switcher is powered on and off
    • Analog audio output signal is no longer lost when the switcher is power cycled
    • Fixed compatibility issue with newer Samsung displays which caused no signal to pass
    • Fixed ARC stability to make it work correctly with more displays
    • Added RS-232 command to make a LED on the front panel of the switcher blink
      • Blink on
      • Blink off
      • Blink sta

    Note: Atlona strongly recommends firmware updates using the Atlona Management System (AMS) or the unit’s web GUI. Firmware can also be updated via USB from a PC with Windows 7, or a Mac running Windows 7 in Bootcamp.

    AMS allows management and automation of firmware updates for multiple Atlona IP-controllable products in an AV installation. With AMS, you can push new firmware to several devices at once, and also schedule updates at a convenient date and time.