HDMI out to Display Port in - will an adapter work?

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geekIT

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#185189 13-Nov-2015 09:42

Contemplating an Asus motherboard with integrated GFX that only outputs HDMI and RGB.

The monitor which will connect to the board only has Display Port and DVI inputs.

The board supplier is adamant that an inexpensive adapter\converter will bridge the gap. ($20-ish)

I'm not so sure, after reading contrary opinions online.

Anyone actually experienced a successful adaptation of this kind?

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Lally

100 posts

Master Geek

#1427400 13-Nov-2015 10:01

Yup, have used them here at work, specifically the 8ware one that Pb sells. The plastic housing though does seem a little weak so be careful of it being crushed or warped.
Mightyape have a HP dongle that does 'look' a little more robust though.

andrew027

1286 posts

Uber Geek

#1427403 13-Nov-2015 10:07

At my previous employer we had HP desktops with dual monitors. The monitors all had DisplayPort inputs but the desktops only had one DP output, plus HDMI, so everybody had one of these:
HP Video Cable Adapter: DisplayPort Digital Audio/Video - HDMI Type A Digital Audio/Video. Seemed to work fine.

MackinNZ

450 posts

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#1427404 13-Nov-2015 10:12

Maybe.

I tried this with a customers Toshiba laptop that only had an HDMI output and the monitor had RGB, DVI and DisplayPort inputs. I connected an HDMI to DisplayPort cable and no video. In the end I used a standard HDMI cable with an HDMI to DVI dongle at the monitor end to get it working.

Dynamic

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#1427412 13-Nov-2015 10:19

HDMI and DVI are electrically compatible. You can buy a cable with HDMI on one end and DVI on the other (and it has no electronics in it).

HDMI and DisplayPort are a different kettle of fish. We use DisplayPort connectors on PC outputs to convert to VGA and DVI regularly. I've never gone from HDMI on a computer and adapted to DisplayPort on a monitor.

If you have access to a HDMI-DisplayPort adapter I would test it first from a laptop with an HDMI connection. If you are near west Auckland I can lend you an adapter.

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geekIT

2417 posts

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#1427413 13-Nov-2015 10:19

Thanks for your comments, guys. I'm confused. Any chance you could take a look here, specifically at post #16.
[http://www.overclock.net/t/1362980/video-card-has-hdmi-monitor-has-display-port-what-kind-of-adapter-do-i-need/10]
'Kevinsbane' (who sounds like he knows what he's talking about) says:

"It's because of the nature of what he wants to do. Simply put, what he needs cannot be fulfilled without said $120 adapter.

He has an HDMI source. He has a DP sink. HDMI and DisplayPort are fundamentally different technologies. It's true that DP++ ports can use those passive adapters/cables to output an HDMI signal to display content on an HDMI monitor. It is not, however, what the OP wants to do. An HDMI port, no matter what kind of HDMI, cannot output a DisplayPort signal to display content on a DP monitor. They simply can't. Therefore, the monitor will display nothing when he tries to do exactly that. The reason why the passive adapters work for the DP++ -> HDMI conversion is because DP++ ports can actually output an HDMI signal. Passive adapters do not work because HDMI -> DP is not compatible."

There's much more, but basically, what he's saying is that it won't work without an expensive adapter. Whereas my merchant is saying $20 would cover it.

Comments?

'Those who can make you believe absurdities can make you commit atrocities.' Voltaire

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Dynamic

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#1427415 13-Nov-2015 10:27

Stick with HDMI to DVI to be safe. You won't get the audio to the monitor over that cable, and your max resolution will be 1920x1200.

If you need higher resolution than that, you'll have to explore the DisplayPort options

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richms

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#1427504 13-Nov-2015 12:31

Even the "passive" display port to HDMI adapters have electronics in them, they are directional as a result.

Richard rich.ms

Equinox IT

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geekIT

2417 posts

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#1427516 13-Nov-2015 12:50

Thanks Dynamic, I guess that would work.

However, I've been shopping around since my last post and if I shift merchants I can buy another very similar mobo for almost the same price with DVI-D, DP and HDMI. Looks like that's the simplest way to work this. I must say, apart from any other advantages of Display Port, I like the concept of the firm yet releasable anchors on the connector.

Thanks to all who responded :-)

'Those who can make you believe absurdities can make you commit atrocities.' Voltaire

'A patriot must always be ready to defend his country against his government.' Edward Abbey

Wade

2225 posts

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#1427530 13-Nov-2015 13:00

I use an Displayport to DVI adapter into a DVI to HDMI lead on my work supplied Toshiba laptop and it works fine. Can't tell you the origins of the adapter sorry as it was supplied by our IT support and it is a very OEM looking Foxconn branded jobbie, possibly supplied with the laptop from Toshiba

Doesn't Displayport allow simple daisy chaining of compliant monitors? definitely a bonus in my book

Dynamic

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#1427538 13-Nov-2015 13:07

Wade: I use an Displayport to DVI adapter into a DVI to HDMI lead on my work supplied Toshiba laptop and it works fine. Can't tell you the origins of the adapter sorry as it was supplied by our IT support and it is a very OEM looking Foxconn branded jobbie, possibly supplied with the laptop from Toshiba

Doesn't Displayport allow simple daisy chaining of compliant monitors? definitely a bonus in my book

Yes DisplayPort OUT of a computer is fine and adapters are designed for this. The question was around HDMI out of a computer and conencting to the DisplayPort INPUT of a monitor. richms was kind enough to confirm this would not work with the normal cheapie ($20-$50) adapters, which was my suspicion.

"DisplayPort ++" connections allow the daisychaining of monitors. Having said that I have not yet seen a monitor with a DP input and output.

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Wade

2225 posts

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#1427574 13-Nov-2015 14:25

Dynamic:
Wade: I use an Displayport to DVI adapter into a DVI to HDMI lead on my work supplied Toshiba laptop and it works fine. Can't tell you the origins of the adapter sorry as it was supplied by our IT support and it is a very OEM looking Foxconn branded jobbie, possibly supplied with the laptop from Toshiba

Doesn't Displayport allow simple daisy chaining of compliant monitors? definitely a bonus in my book

Yes DisplayPort OUT of a computer is fine and adapters are designed for this. The question was around HDMI out of a computer and conencting to the DisplayPort INPUT of a monitor. richms was kind enough to confirm this would not work with the normal cheapie ($20-$50) adapters, which was my suspicion.

"DisplayPort ++" connections allow the daisychaining of monitors. Having said that I have not yet seen a monitor with a DP input and output.

Oops... I suppose it helps if i read the original post properly :P