I got this cable for my Alienware M15x laptop. I was surprised it'd didn't come with an HDMI and was not familiar with displayport. I got this cable so I could watch my movie files while on vacation. The adapter works great and is very well made. The part that plugs into the data port has a positive locking system which is nice. The quality is also very good and it feels substantial and well put together.

Additional info. For me (as mentioned in the comments below), in order to send the audio through the HDMI cable, you will need to get into the "sound and Audio devices" of the control panel and change the sound playback Default Device to the displayport cable. If you don't the sound will come out the laptop speakers or whatever speakers you have hooked up to the laptop.

Just a quick update. I've been using this cable on and off for a while and it still works just fine. More and more hotels have nice TV's with HDMI in plugs so I can play my movies from my laptop which is nice.

I just wanted to mention that although the photo of the adapter may look like a USB at first glance IT'S NOT, it IS a DisplayPort male end you are seeing. This is a DisplayPort to HDMI adapter, just like the title says. I see too many people giving this item bad reviews because they made the mistake of ordering it thinking it is a USB to HDMI. It isn't. The title and description is correct. I'm not saying I've never ordered the wrong thing by mistake but I can't say I'd blame Amazon for my mistake.

Peaty

EDIT again, 3/22/14. I've gone down the rabbit hole with Alice, when it comes to these DVI-D to male Display Port single link adaptors. Lost 3 days trying out different things, and guess what: the BLACK one (link in comments, I can't put it here) -- the BLACK one works with the Dell 2211H monitor and Dell 780 (single-link) Display Port. Dell is having a 30% off (with free shipping) sale on these refurbished monitors through March 31: just enter SPRING30 as your discount coupon code (you can only use the coupon ONCE), at dfsdirectsales(dot)com. They are also being auctioned off in dellauction(dot)com, going for about the same price as on sale (roughly $70, pre-shipping). They are good monitors, with ONE Type B usb port to hub power for two Type A ports on the left side of the monitor (dfsdirectsales claims two and two, that's incorrect). Native Resolution is 1920x 1080p; if you make an onscreen video, the video uploaders like vimeo, will recognize that resolution. (I just tested it.)

But each monitor varies, for I have many of them; these adaptors, didn't initially work. Why? Well, part of the problem, is Windows 7. When you first connect a monitor or change the monitors you had connected, and you've HAD at least two before, or have them now -- Windows unaccountably assigns the higher-resolution monitor, 'first place'. So the other monitor might stay dark, if the configuration is wrong (depending on whether you're using Intel integrated graphics or nVidia). That problem remains unless you 'burp' Windows 7 to reset, by unplugging the monitors, or otherwise changing them. I think that's what happened, here. I don't have a separate monitor port expansion, video or graphics card. The Dell Optiplex 780 is an older business machine which only has 15-pin VGA and Display port as its defaults. So if Windows doesn't recognize both defaults on boot, then it won't recognize the monitors after boot. Until this 2211H monitor was hooked up.

So now the question is, why that monitor? Its DVI-D connector looks just like all of them. But the StarTech BLACK connector, is somewhat different from its white one. The white one has a black face, and only the single blade at the end. It works fine as a passive dual-link connector for the newer, dual-link Display Ports. It also works after Windows 7 was 'burped' -- by the BLACK ONE.

THIS BLACK one has the same WHITE FEMALE FACE as on the back of the monitor. I can't explain why this BLACK one works on the Dell 2211H (which has two usb ports, essential for WD Passport usage), with the Dell 780 (which has only a single-link Display Port). I can only report it does.

Also, if you're interested, the StarTech DisplayPort to HDMI converter works well also, but in Dell 780s, all that's transmitted, is video (single-link DPs only transmit video). Link to it, is in the comments.

So the original edit and review below, are thus here corrected. I've re-rated the BLACK one to four stars (will be five once I'm sure of the longevity). Again, the key is that its white face (which you can see in the web pictures) should MATCH the back of the monitor's DVI-D connector. Again, the comments contain links to four adaptors (the Accel allegedly ACTIVE DVI-D to single-link Display Port, didn't work at all). So you won't lose 3 days, trying to figure out this stuff!

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EDIT, 3/18/14: I've now tried both of these with my Dell 780 computers and a Dell 1907 monitor, plus an older one. The monitors are DVI-D, which is an important distinction; Dell flat panel monitors are all DVI-D(igital Only); that style is incompatible with most other DVI, and also incompatible with VGA(nalog), so you can't use a VGA-DVI adaptor, since the -D is Digital Only. Another important distinction, is that the 780 computers' Display Ports, are SINGLE LINK, not dual. This product's description, claimed it would work on single-link Display ports, and would convert, not merely be a passive adaptor.

Wrongo. The adaptor is passive, works fine with Display ports that are DUAL link, like later Dell machines, eg the Latitude 6510 laptop. Both the adaptors described below are of the same type, and are passive. Had I known that before purchase, I'd not have bought these. So chalk it up to misleading description. Not worth the time returning, and the things are well made, do work with my dual link Display Ports.

So, the monitor won't 'hear' the signal, stays black and blank. I'm so tired of trying to figure out what cables and other nonsense are compatible with what other stuff, I could scream. Lost two days, just trying to find out what cable to buy, and it's the wrong one. So I write this, hoping to save YOU time. Will try another type, won't say what kind now; and if it works, I'll put its link in the comments.

Original review, follows below, made the day before this edit.
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The StarTech DP to DVI adapter/converter which has a WHITE DVI plug (bell-shaped) casing but black terminus, is female DVI-D only. Which means, all those little holes and one 'blade'. By contrast, the StarTech DP to DVI adapter/converter which has a BLACK DVI plug (square) casing but a white terminus, is female multi-purpose DVI, for it has holes above and below the 'blade' for a DVI-I or similar male connector.

I don't know if DVI-D only will work with the black (square) one. They both fit well to male DVI-D plugs, but will the signal carry? I can't say yet. The monitors I just bought from Dell haven't arrived. Will edit this review to report performance of each, later.

By the way, the monitors are 2211H's, which have TWO upstream and TWO downstream usb ports. So, you can hook up one monitor with two computers (the upstream ports are those rounded square ends, and provide the hub connection on independent power; the downstream ports are on the monitor, into which you plug your devices, which receive power from the monitor's hub). They only allow VGA or DVI-D connection.

So if your machines only have VGA and Display Port like mine (Dell 780 Optiplex), you need one of these converters, so you can hook up both computers per monitor (using only one computer at a time, but it saves desk space).

IMPORTANT: you cannot convert DVI-D (which only has the blade at one end, no pins surrounding it) to VGA. Only a DVI-I can convert (it has four pins or more, surrounding that blade). So if your monitor is DVI-D, you cannot use a VGA adaptor. Problem is, many of the so-called 'DVI' adaptors sold, don't clearly specify whether DVI-D or not.

Display Port Limits Audio
These latest HDMI 2 display port to HDMI 2 converts and cleans up JUST the video. For audio, they only allow 48KHz,16bit stereo signals through (in both Linux and Windows) systems.
I tried three different brands here on Amazon in three HTPC/Nvidia systems. The issue is either Nvidias fault, or the converter chip or both. In any event my goal was to clean up both the sound and video quality.
Instead i successfully used a $20 PW-HR20-HDMI 2.0 Repeater Extender.

Bottom Line
If you can get by with stereo sound then go for it. However if the source is 5.1 then you will not hear the center cahnnel voice.

This DisplayPort to VGA Adapter works perfectly allowing me to connect 2 monitors to my desktop computer and view a different image on each screen at the same time. Sometimes I will do work on one monitor and have a movie playing, or a music video, or news, etc. on the other monitor. I love working with 2 monitors so I can access 2 different applications or 2 different web pages at the same time while transitioning smoothly from one screen to another. I can use the same cordless mouse and move from the screen on my left to the one on my right and vice-versa without interruption. I was not able to find this item in any electronic store in my area, so ordering it online was my only option. Arrived in 2 days and works perfectly. I've had it for about 4 months now without any problems.

I am using this to connect a computer with 4k video (DisplayPort) to a 65 inch 4k TV with HDMI. It worked fine for about three weeks. Then it exhibited the following symptoms: no video for varying periods of time, tearing video, and flickering. The same symptoms showed up at 1920x1080 resolution, so it wasn't a problem with the 4k video. I tested it with different DisplayPort outputs and the problem was still present.