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Convert HDMI Signals to Mini DisplayPort Signals
Atlona AT-HD620 HDMI / Mini DisplayPort to Mini DisplayPort Scaler and Switcher
Atlona AT-HD620 HDMI / Mini DisplayPort to Mini DisplayPort Scaler and Switcher
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Atlona AT-HD620 HDMI / Mini DisplayPort to Mini DisplayPort Scaler and Switcher
Item# 81418
Free shipping on orders over $175 - See Details


  • Capable of scaling any HDMI source to resolutions up to 2560x1440
  • Supports native resolutions of Apple iMac 27" (2560x1440) and Apple 24" LED
  • Supports 50/60Hz frame rate conversion with 60Hz output
  • Control via supplied IR remote or Manual button selection

Essential Info

The Atlona AT-HD620 HDMI / Mini DisplayPort to Mini DisplayPort Scaler and Switcher allows the user to extend the usage of their Mini DisplayPort monitor. This device can convert HDMI signals from any HDMI enabled source (BluRay, PS3, Xbox, Cable Box, TiVo and so on) to a Mini DisplayPort monitor. The scaler is able to upconvert any HDMI resolution to match the native resolution of an Apple iMac 27" or 27" LED (2560x1440) and Apple 24" (1920x1200). The scaler is capable of scaling up to dual link resolutions. The AT-HD620 will perfectly work with other Mini DisplayPort and DisplayPort monitors as well. The switching abilities of the box allows users to have HDMI sources as well as Mini DisplayPort sources connected at the same time and switch between them rather than disconnecting and reconnecting cables each time a user wants to view HDMI sources or work on a laptop and use the Apple iMac 27", 27" LED or Apple 24" as a display.


What's Included

  • AT-HD620 HDMI & MDP to MDP with Stereo Audio converter/switcher
  • IR Remote Control
  • 5V DC adaptor
  • Operation manual

  • Specifications

    • Frequency Bandwidth: 165 MHz
    • Input Ports: 1 x HDMI (scaling), 1 x Mini-DisplayPort (bypass)
    • Output Ports: 1 x Mini-DisplayPort, 1 x Stereo Audio
    • Input/Output Resolution:
      • SDTV: 480i/p, 576i/p @ 50/60Hz
      • HDTV: 720p@60Hz / 1080i@25/30Hz / 1080p@50/60Hz
      • Computer: VGA 640x480@60, 72, 75, 85Hz
      • SVGA: 800x600@56, 60, 72, 75, 85Hz
      • XGA: 1024x768@60, 72, 75, 85Hz
      • SXGA: 1280x1024@60, 75, 85Hz
      • UXGA: 1600x1200@60Hz
      • WXGA: 1280x800@60Hz
      • WSXGA: 1680x1050@60Hz
      • WUXGA: 1920x1200@60Hz
      • WQHD: 2560 X 1440@60Hz

    • ESD Protection: Human body model: ± 8kV (Air-gap discharge), ± 4kV (Contact discharge)
    • Power Supply: 5V/2.6A DC (US/EU standards, CE/FCC/UL certi?ed)
    • Dimensions (inch): 7.08(W) x 4.48(D) x 0.98(H)
    • Weight: 1.2 lb
    • Chassis Material: Aluminum
    • Silkscreen Color: White
    • Operating Temperature: 0°C ~ 40°C / 32°F ~ 104°F
    • Storage Temperature: -20°C ~ 60°C / -4°F ~ 140°F
    • Relative Humidity: 20 ~ 90% RH (non-condensing)
    • Power Consumption: 7.5 W
    Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Atlona Technologies, Tel: (408) 962-0515


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    3 Ratings
    5 star: 33%  (1)
    4 star: 33%  (1)
    3 star: 33%  (1)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (3 customer ratings)
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    ABDULAZIZ -- riyadh, XX   1/3/2011
    simply flawless
    F. Maas -- South Bay area   12/29/2010
    The Atlona AT-HD620 is a well built and potentially useful device depending on what you want to use it for. In my case I wanted to share a 27 Apple Cinema monitor between an IMac 27 and a desktop PC equipped with an ATI 6870 video card that has Mini DisplayPort, HDMI and DVI capacity and like the IMac has resolution capabilities to reach the 2560x1440 Apple Cinema monitor's resolution. The HD620 has two inputs, a Mini DisplayPort and a HDMI and my plan was to Mini DisplayPort the IMac and HDMI the PC. Set up was easy and I looked forward to being able to use the remote to change inputs. The Altona unit uses upscaling to reach 2560x1440 resolution from the HDMI feed. The upscaling works for video with some success, a little noisy but didn't look bad. Static displays however were not that great and text was abysmal to the point of being unreadable in some cases. I connected the PC via the Mini DisplayPort and the output was outstanding and at true 2560x1440 resolution. I hooked up the IMac via HDMI through the HD620 and got the same subpar output with bad text that I had experienced with the PC. Tested the unit with HDMI feeds from other video devices and results were acceptable. You cannot turn off the upscaling and run at HDMI native resolution. So if you want to hook up a gaming box or a DVD player in order to use an Apple Cinema in lieu of a TV monitor, I think the output and the remote might justify the cost of the HD620. But, if you want to share the Apple Cinema between 2 computers, even 2 Apple products read on. First though I want to commend SmartHome, the vendor that Amazon used for my purchase, with an excellent return process. No quibbling, they took the unit back without a problem, RMA was painless and done online and I got confirmation of the return immediately upon return delivery to SmartHome. I also found Atlona to be accessible and helpful when I called them to discuss the problems I was having with their product, they gave me no BS and guided me to a better, less expensive alternative, the Atlona AT-MDP21. The AT-MDP21 is a non-powered KVM switching device that is about 25% the cost of the AT-HD620. It is a simple pass-through unit that can share a single keyboard, video and mouse between 2 CPU’s. I didn’t get this product initially because the literature for the unit showed a max resolution of 1920x1200. This, it turned out, applied only to the 24” Apple display. The unit is capable of running 2560x1440 if the source is running at that resolution. Long story short; ordered the MDP21 on Monday from Amazon and received today Wednesday. Took 3 minutes to hook up the CPU’s and the unit to the monitor I am not using it for keyboard or mouse and I got great 2560x1440 resolution from the IMac and PC on the Apple Cinema Display. You might want to note that the MDP21 comes with 2 male to male Mini DisplayPort cables but they are only 3 feet long. If you need to cover greater distances you may want to order onl
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