Update: This popular deal is still available
Amazon has
Amazon Basics DisplayPort to HDMI Adapter (4k@30Hz) for
$2.61.
Shipping is free w/ Amazon Prime or on orders $25+.
Thanks to community member
phoinix for sharing this deal.
Note, HDMI cable required (not included)
Features:
- Connects a computer with a DisplayPort to an HDMI-equipped HDTV, monitor, or projector for audio/video streaming
- Supports video resolutions up to 4K@30Hz
- Converts signal from DisplayPort to HDMI only (not bi-directional)
- Ready to use, right out of the box; no external power adapter needed
- DisplayPort is not compatible with a USB port; please ensure computer has a DisplayPort before purchasing this adapter
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EDIT: It's also uni-directional, meaning it only can send signal from the DisplayPort end through to the HDMI port end, and not the other way around. In other words of you buy this hoping to use it to connect your laptop which has HDMI to your monitor which has DisplayPort, it will not work because that's HDMI --> DP rather than DP --> HDMI.
To do 4k@60Hz you need HDMI 2.0 or newer. Amazon is probably clearing out their stock of older HDMI 1.4b adapters.
No. A Displayport port (on your computer or video card) can support several features.
The higher-end versions support Displayport, HDMI, Ethernet (100Mbps on older versions, Gigabit on newer), and/or USB data. Basically you can use the port to plug in a hub (some Displayport monitors have these extra ports built-in); a much cheaper hub than Thunderbolt (PCIe over USB-C). You can use a passive adapter with these.
The most common version can output either Displayport or HDMI (or DVI, though I haven't seen that supported in a while). You can use a passive adapter with these. The adapter basically tells the port "I want an HDMI signal" and the computer or video card switches the Displayport port to outputting HDMI via the Displayport wires.
The basic version can only output Displayport. A passive adapter will not work with this as the port is incapable of outputting an HDMI signal. You will need an active adapter. An active adapter has circuitry which can convert Displayport into HDMI on the fly.
To quote the wiki: "The interface uses an LVDS signal protocol that is not compatible with DVI or HDMI. However, dual-mode DisplayPort ports are designed to transmit a single-link DVI or HDMI protocol (TMDS) across the interface through the use of an external passive adapter, enabling compatibility mode and converting the signal from 3.3 to 5 volts. For analog VGA/YPbPr and dual-link DVI, a powered active adapter is required for compatibility and does not rely on dual mode. Active VGA adapters are powered directly by the DisplayPort connector, while active dual-link DVI adapters typically rely on an external power source such as USB."
Unfortunately, a lot of computer manufacturers are not very forthcoming about whether the Displayport port on the computer supports just Displayport, or is dual-mode and supports HDMI (or DVI). So you end up having to search owner forums for your computer/laptop to find out. The video card manufacturers tend to be better about telling you, and will usually toss in a free adapter in the box if the card doesn't have a physical HDMI port (i.e. you may already have a passive Displayport to HDMI adapter in the bag of stuff left over from your video card install).
tl;dr - Some Displayport ports (actually most in my experience) can output HDMI instead of Displayport, and will work with a passive adapter. If you're unsure what type of port you have, get an active adapter just to be safe. Or you can take a gamble and try this since it's only $2.61.
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EDIT: It's also uni-directional, meaning it only can send signal from the DisplayPort end through to the HDMI port end, and not the other way around. In other words of you buy this hoping to use it to connect your laptop which has HDMI to your monitor which has DisplayPort, it will not work because that's HDMI --> DP rather than DP --> HDMI.
EDIT: It's also uni-directional, meaning it only can send signal from the DisplayPort end through to the HDMI port end, and not the other way around. In other words of you buy this hoping to use it to connect your laptop which has HDMI to your monitor which has DisplayPort, it will not work because that's HDMI --> DP rather than DP --> HDMI.
EDIT: It's also uni-directional, meaning it only can send signal from the DisplayPort end through to the HDMI port end, and not the other way around. In other words of you buy this hoping to use it to connect your laptop which has HDMI to your monitor which has DisplayPort, it will not work because that's HDMI --> DP rather than DP --> HDMI.
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But, recently I have upgraded to uhd monitor and that splitter only supports 30hz.
When I scroll webpages, its a pain to watch the screen.
So, now I have to spend more money to get a 60hz splitter.
This is my experience and buys take cue.
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To do 4k@60Hz you need HDMI 2.0 or newer. Amazon is probably clearing out their stock of older HDMI 1.4b adapters.
- The higher-end versions support Displayport, HDMI, Ethernet (100Mbps on older versions, Gigabit on newer), and/or USB data. Basically you can use the port to plug in a hub (some Displayport monitors have these extra ports built-in); a much cheaper hub than Thunderbolt (PCIe over USB-C). You can use a passive adapter with these.
- The most common version can output either Displayport or HDMI (or DVI, though I haven't seen that supported in a while). You can use a passive adapter with these. The adapter basically tells the port "I want an HDMI signal" and the computer or video card switches the Displayport port to outputting HDMI via the Displayport wires.
- The basic version can only output Displayport. A passive adapter will not work with this as the port is incapable of outputting an HDMI signal. You will need an active adapter. An active adapter has circuitry which can convert Displayport into HDMI on the fly.
To quote the wiki: "The interface uses an LVDS signal protocol that is not compatible with DVI or HDMI. However, dual-mode DisplayPort ports are designed to transmit a single-link DVI or HDMI protocol (TMDS) across the interface through the use of an external passive adapter, enabling compatibility mode and converting the signal from 3.3 to 5 volts. For analog VGA/YPbPr and dual-link DVI, a powered active adapter is required for compatibility and does not rely on dual mode. Active VGA adapters are powered directly by the DisplayPort connector, while active dual-link DVI adapters typically rely on an external power source such as USB."Unfortunately, a lot of computer manufacturers are not very forthcoming about whether the Displayport port on the computer supports just Displayport, or is dual-mode and supports HDMI (or DVI). So you end up having to search owner forums for your computer/laptop to find out. The video card manufacturers tend to be better about telling you, and will usually toss in a free adapter in the box if the card doesn't have a physical HDMI port (i.e. you may already have a passive Displayport to HDMI adapter in the bag of stuff left over from your video card install).
tl;dr - Some Displayport ports (actually most in my experience) can output HDMI instead of Displayport, and will work with a passive adapter. If you're unsure what type of port you have, get an active adapter just to be safe. Or you can take a gamble and try this since it's only $2.61.
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