Mini DisplayPort 1.1 Video + S/PDIF (Toslink) Digital Optical Audio to HDMI® Converter
    Product # 6331
    Mini DisplayPort 1.1 Video + S/PDIF (Toslink) Digital Optical Audio to HDMI® Converter
    Product # 6331
    In Stock This item should ship today (10/21/2016) if ordered within 2 hours 33 minutes

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    Mini DisplayPort 1.1 Video + S/PDIF (Toslink) Digital Optical Audio to HDMI® Converter

    Connect your mini DisplayPort and Toslink equipped MacBook®, laptop, or PC to an HDMI® display using this Mini DisplayPort Video + S/PDIF (Toslink) Digital Optical Audio to HDMI® Converter from Monoprice.

    This adapter combines the mini DisplayPort video signal and the Digital Optical (Toslink) audio signal from the 3.5mm digital audio output into an HDMI audio/video signal. The adapter supports resolutions up to 1920x1080p, up to 36-bit Deep Color (12-bits per channel), and high-definition, multichannel audio, including DTS-HD Master Audio™ and Dolby TrueHD™. The adapter is powered using an available USB port. Note that this is not bidirectional and therefore will NOT convert HDMI video to mini DisplayPort.


    • 28" cable length
    • Supports resolutions up to 1920x1080p
    • Supports up to 12-bit per channel (36-bit total) Deep Color
    • Support uncompressed 2-channel and 5.1-channel LPCM audio
    • Supports compressed 5.1-channel audio, such as DTS-HD Master Audio and Dolby TrueHD

    Note for Mac® Mini users using dual monitors: There is an unresolved issue with using both the mini-DVI and Mini DisplayPort video outputs at the same time. When the mini-DVI cable is disconnected, the Mini DisplayPort output ceases to function, causing the display to show an "unsupported format" error. The solution is to use the mini-DVI output for the main display and the Mini DisplayPort output for the secondary display.

    HDMI, the HDMI Logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

    Apple, Mac, and MacBook are trademarks of Apple Inc., registered in the U.S. and other countries.

    DTS is a registered trademark and the DTS logos, Symbol, DTS-HD and DTS-HD Master Audio are trademarks of DTS, Inc.

    Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.

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    113 Reviews

    85.04% of the reviewers recommend this product


    Worked great for 2 days and died

    • Alan H,
    •  San Francisco, CA 
    • 9/15/2016 8:36:40 PM

    Pros: - Includes a short Toslink cable
    - Does what it is designed to

    Cons: - Broke after 2 days
    - Needs an odd overscan configuration (not a big problem)

    As some reviewers have mentioned, this device may seem to suffer from an overscan or underscan problem, where the output from your computer may be cut off around the edges or it may not fill the screen of you TV. I experienced this, too. But I found that if I turn *on* overscan on my Mac Mini's Display settings and turn *off* overscan on my TV's settings, then everything was perfect, with no pixels wasted or cut off. Weird, but true.

    So after a couple minutes of frustration, everything was great. Optical audio out was being spliced into video! The HDMI was going into my receiver, providing surround sound, and then on to my TV for a lovely 1080p image!

    Everything was great for two days. Then the audio just cut out, out of nowhere. A minute later, the screen was black.

    I disconnected and reconnected cables. I restarted everything. I left everything off for a day and tried again the next day. No luck. Still no signal coming through that HDMI. The TV and receiver are still just fine.

    I was disappointed with the short lifespan and apparent low reliability of this item. I am asking Monoprice for a refund or replacement.

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    Almost perfect

    • Charlie,
    •  Minneapolis, MN 
    • 4/18/2016 8:09:27 AM

    Pros: Easy to connect
    Works as described

    Cons: Image is slightly overscanned (at least with some combinations of Mac Mini and TV)

    This does exactly what it says: adds audio to the HDMI output from an older Mac Mini (which doesn't send audio out via a regular Mini DisplayPort-to-HDMI adapter) so the audio plays through a TV. So that's great.

    What's a little irritating is that the image on the TV is now slightly overscanned - you lose a very small amount of the image at all sides.. Using the previous (non-audio) HDMI connection, the image was perfectly sized to the screen. Somehow this device is interfering with my LG TV's ability to correctly negotiate screen size with the Mac.

    The Displays control panel on the Mac now has an "Overscan" check-box, which didn't appear before. Unchecking the box shrinks the image so you can see the whole thing, but then it displays inside a wide black border.

    So the options are either a slightly-too-big screen image, or a much-too-small screen image. The slightly-too-big one is not terrible, so i'm going with that, because the addition of the audio feed is a huge improvement.

    So not a huge complaint, just a quibble. But clearly some combinations of MacMini and TV will not set the screen size exactly right.

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    Perfect for my older Mac Mini

    • p,
    •  Somerset, MA 
    • 2/19/2016 6:22:59 AM

    Pros: No effort to install. Plug in the cables and go.

    Cons: The red light is kind of annoying.

    I picked this up so I could integrate my late 2009 Mac Mini into my home theater via HDMI. It does exactly what it claims to, I am able to view content at 1080p with dts and AC3 without issue.

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    unit doesn't work, on my second one!

    • MLT,
    •  Los Angeles, CA 
    • 8/18/2015 11:19:33 AM

    Pros: moonrise seems to try hard to resolve my issues, give them a 10 for customer service

    Cons: just got a replacement unit form monoprice, it does the same thing as the first unit i had - unit goes on an off intermittently.

    not so good, can't rely on this product...

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    Works Great!!

    • Robert Gardner,
    •  Fredericksburg, VA 
    • 3/8/2015 12:13:01 PM

    Pros: Everything needed for non HDMI equipped macbooks to display on TV monitors..

    Cons: Lacks informative instructions and data.

    Note for existing and future purchasers: Before going into a panic and blowing your top after connecting to your Mac and only getting only audio, be sure to check your mac's display settings for the proper output. Mac default setting may be at 1080p, at least mine was. The monitor I was connecting to only displays 1080i ! If Mac output is incorrectly get audio only ! So before you give up and ship it back thinking it doesn't work check your display outputs...just a heads up..

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