Best DisplayPort 1.4 to HDMI 2.1 Adapter: Top 4K Adapters

The best displayport 1.4 to hdmi 2.1 adapter depends on the resolution, refresh rate, and gaming features you need. Cable Matters 102101 stands out on published specifications for fixed-refresh 4K at up to 240Hz, while UPTab’s active dongle is a more relevant option if you need manufacturer-advertised variable refresh rate (VRR) support. StarTech offers an integrated cable for a cleaner connection, and UNITEK provides another compact adapter supporting up to 8K at 60Hz. These products are not interchangeable in every setup: maximum performance depends on your GPU, display, HDMI cable, and the particular features supported by the adapter.

Quick verdict

For a desktop PC with a DisplayPort 1.4 output and an HDMI 2.1 monitor or TV, start with the exact output mode you need rather than the HDMI version printed on the packaging. The four options below have identifiable models and manufacturer documentation, but their advertised capabilities and limitations differ.

Selection basis: manufacturer specifications and product documentation reviewed October 29, 2026. No detailed research was supplied or claimed.

Best DisplayPort 1.4 to HDMI 2.1 adapter picks

These are specification-based recommendations, not independently researched rankings. In particular, the highest listed resolution or refresh rate does not guarantee that every color-depth, HDR, or VRR combination will work simultaneously.

Cable Matters 102101 — best for high fixed-refresh rates

The Cable Matters 102101 is the strongest starting point when your primary objective is a high-refresh-rate HDMI display and variable refresh rate is not a requirement. Its official product documentation advertises up to 4K at 240Hz or 8K at 60Hz with compatible graphics hardware and displays.

The adapter converts a DisplayPort output from a PC or graphics card to an HDMI input on a monitor or television. It has an HDMI female connector, so you must supply a suitable HDMI cable separately.

The main attraction is its advertised resolution and refresh-rate ceiling. That makes it worth considering for a gaming monitor that accepts a high-refresh signal over HDMI or a large HDMI-equipped display used as a PC gaming screen. Digital Stream Compression (DSC) and compatible source hardware are important when targeting demanding modes.

Cable Matters is also unusually explicit about a limitation that can affect gaming decisions: the adapter does not support VRR, G-Sync, or FreeSync. Its high-refresh capability therefore should not be confused with support for every HDMI 2.1 gaming feature. If your screen relies on variable refresh rate to reduce tearing, this model is not the right fit.

Pros

• Advertised support for 4K at 240Hz and 8K at 60Hz.

• HDR support and a clearly documented DisplayPort-to-HDMI direction.

• Manufacturer troubleshooting guidance for high-resolution compatibility.

Cons

• VRR, G-Sync, and FreeSync are not supported.

• A separate HDMI cable is required.

• Maximum modes depend on the GPU, display, firmware, and connection settings.

Buy if: You want high fixed-refresh output from a compatible desktop GPU and do not need VRR.

Skip if: Variable refresh rate is essential to your gaming setup or your computer only has an HDMI output.

UPTab DisplayPort 1.4 to HDMI 2.1 active dongle — best when VRR matters

UPTab’s active dongle is the more relevant choice when you want HDR and variable refresh rate rather than simply the highest advertised fixed refresh rate.

The manufacturer’s product page specifies output up to 8K at 60Hz or 4K at 120Hz, HDR, DSC 1.2a, and VRR. It uses a VMM7100 chipset and supports mirror and extended display modes on compatible Windows and macOS systems.

That makes it worth considering for a PC connected to an HDMI 2.1 gaming display or TV where VRR is part of the intended setup. However, the manufacturer’s claim should be treated as a compatibility specification, not proof that every GPU and television combination will negotiate VRR correctly.

There is also a detail worth checking before ordering. The product specification lists a maximum power input of 5V/900mA, while its package list names the adapter itself. Confirm the power arrangement for the particular unit and whether any additional power accessory is required for your setup.

UPTab lists a one-year warranty and a 30-day return period on its product page. The return window may be useful for checking compatibility with your specific GPU, monitor, and target settings.

Pros

• Advertised 4K 120Hz and 8K 60Hz output.

• Explicit manufacturer claims for HDR, VRR, and DSC 1.2a.

• Compact active-conversion design.

Cons

• Its advertised maximum is lower than the Cable Matters 102101’s 4K 240Hz claim.

• VRR functionality has not been independently researched here.

• Power requirements deserve confirmation before purchase.

Buy if: You need an adapter whose manufacturer explicitly lists VRR support.

Skip if: You require a verified 4K 240Hz mode or cannot confirm that the power arrangement and compatibility match your equipment.

StarTech 133DISPLAYPORTHDMI21 — best integrated adapter cable

The StarTech 133DISPLAYPORTHDMI21 takes a different approach: the active conversion hardware is integrated into a 6.6-foot (2-meter) cable with a DisplayPort male connector at one end and an HDMI male connector at the other.

This is convenient if you want to connect a desktop directly to an HDMI monitor or TV without adding a separate HDMI cable to a small adapter. The integrated design also removes one additional connector junction from the signal path.

StarTech specifies support for up to 8K at 60Hz or 4K at 144Hz, HDR10, HDCP 1.x/2.2/2.3, DSC 1.1/1.2a, and 7.1-channel HDMI audio. Its datasheet lists a three-year warranty and says drivers or additional software are not required.

Maximum performance requires compatible DisplayPort 1.4 hardware and DSC. The manufacturer’s documentation also notes that some combinations, including certain Apple M1/M2 configurations without a qualifying dedicated graphics card, will not reach the maximum 8K 60Hz mode.

The main limitation for gaming is that VRR is not specified in the product datasheet. Do not assume that its HDMI 2.1 compliance automatically enables variable refresh rate, G-Sync, or FreeSync.

Pros

• Integrated 6.6-foot cable with no separate HDMI cable required.

• Advertised 4K 144Hz and 8K 60Hz output.

• HDR10, multichannel audio, DSC, and three-year warranty.

Cons

• Cable length is fixed.

• Maximum output requires compatible source hardware.

• VRR support is not established by the consulted datasheet.

Buy if: You prefer a single cable for a fixed desktop-to-display connection.

Skip if: You want a detachable HDMI cable, need a longer run, or require explicitly documented VRR support.

UNITEK V1617AGY01 — an alternative for 4K 120Hz or 8K 60Hz

The UNITEK V1617AGY01 is a compact DisplayPort 1.4 male-to-HDMI 2.1 female adapter. Its official product page lists output up to 8K at 60Hz and backward compatibility with 4K at 120Hz, subject to the connected devices. It also lists HDR, DSC 1.2a, multichannel audio, and an aluminum housing.

This model is worth considering if you want a small adapter and your target mode is 4K 120Hz rather than 4K 240Hz. Its female HDMI port allows you to choose the HDMI cable length separately, which may be more convenient than an integrated cable in some desk arrangements.

The manufacturer listed the V1617AGY01 at $24.99 on its official storefront when checked on October 29, 2026. That is a useful reference point, but the price and stock status can change. It is not enough by itself to establish the best overall value because comparable prices and independent performance results were not available for every model in this roundup.

Be careful to select the exact V1617AGY01 model. UNITEK also lists a related adapter under SKU V1611A01, and that older product page showed it as sold out during research. Specifications and stock status should not be transferred between those models.

The V1617AGY01’s consulted product page does not clearly establish VRR compatibility. If FreeSync, G-Sync, or another variable-refresh mode is necessary, get confirmation for this exact SKU before purchasing it.

Pros

• Advertised 4K 120Hz and 8K 60Hz output.

• HDR and DSC support.

• Compact adapter with an aluminum housing.

• Manufacturer-listed price of $24.99 at the time of verification.

Cons

• A separate HDMI cable is required.

• Maximum output is device-dependent.

• VRR support is not clearly documented on the consulted product page.

Buy if: Your target is 4K 120Hz or 8K 60Hz, and you want a compact adapter at a relatively modest listed price.

Skip if: You require confirmed VRR operation or want a specifically documented 4K 240Hz mode.

How we selected these adapters

This category requires more careful filtering than a generic DisplayPort-to-HDMI roundup. Ordinary adapters may support only 1080p or 4K at 60Hz, while some products sold under similar names convert HDMI to DisplayPort in the opposite direction.

The selection process prioritized four criteria.

Correct signal direction. Each featured option is intended to accept a DisplayPort source and output HDMI for a display. Products designed for HDMI-source-to-DisplayPort-display conversion are not substitutes.

Documented display modes. The shortlist uses manufacturer-published maximum resolution and refresh-rate specifications rather than assuming that every adapter labeled HDMI 2.1 supports 4K 120Hz or 240Hz.

Relevant gaming features. HDR, DSC, and VRR are considered separately. These features cannot be treated as interchangeable: one adapter may advertise 4K 240Hz while explicitly excluding VRR, whereas another may advertise VRR but a lower maximum refresh rate.

Useful compatibility and support information. Exact model numbers, power requirements, cable format, warranty information, and documented limitations were considered. No product was physically tested for this article, and no Amazon ratings or unverified user reports were used to establish product quality.

Four options are included because this is a specialized conversion category. Adding generic adapters, reverse-direction converters, or products whose exact capabilities could not be established would make the list longer without making it more useful.

How to choose the right adapter

Confirm that DisplayPort is the source and HDMI is the display input

Signal direction is the first compatibility check. These adapters take video from a DisplayPort output on your computer and convert it for an HDMI input on the monitor or TV.

They do not normally work in reverse. For example, connecting an HDMI-output gaming console to a monitor that accepts only DisplayPort requires a converter designed for HDMI-to-DisplayPort instead. A DisplayPort-to-HDMI adapter is not the solution for that setup.

Also check the physical ports. A full-size DisplayPort adapter is not automatically compatible with a Mini DisplayPort or USB-C output. USB-C video requires a port that supports DisplayPort Alternate Mode or an appropriate Thunderbolt implementation, along with the correct converter.

Match the maximum resolution and refresh rate

Select an adapter based on your intended display mode, not the largest resolution listed on the product page.

A listed maximum is not a guarantee that the adapter will support every combination of color depth, chroma format, HDR, and refresh rate simultaneously. The GPU, display firmware, HDMI input, cable, and adapter all influence the available modes.

Check DSC support on the graphics card

Display Stream Compression, or DSC, allows a compatible video system to transmit high-resolution or high-refresh-rate signals within the available interface bandwidth. VESA describes DSC as a visually lossless compression standard.

That matters because DisplayPort 1.4 has finite bandwidth. When an adapter advertises demanding modes such as 4K at 120Hz or higher, check whether the manufacturer requires DSC and whether your graphics hardware supports it.

Do not assume that the HDMI 2.1 label on the adapter removes limitations imposed by the computer’s DisplayPort output. Signal conversion changes the output interface; it does not make every source device capable of every output mode supported by HDMI 2.1.

Treat HDR and VRR as separate requirements

HDR compatibility matters for high dynamic range games and video, but it does not establish support for variable refresh rate. Likewise, an adapter that supports a high fixed refresh rate may not support FreeSync, G-Sync, or HDMI VRR.

Cable Matters explicitly excludes VRR on the 102101. UPTab lists VRR support for its active dongle, but that claim still needs to match the target GPU and display configuration. For the StarTech and UNITEK options, do not assume VRR is supported when the consulted documentation does not clearly establish it.

If VRR is a deciding factor, get written confirmation for the exact model and intended devices, and make sure the seller’s return policy accommodates compatibility problems.

Use an appropriate HDMI cable

The three adapters with female HDMI outputs in this roundup require a separate HDMI cable. Choose a cable rated for the display mode you actually intend to use.

For bandwidth-demanding HDMI 2.1 modes, a certified Ultra High Speed HDMI cable is a sensible starting point. The HDMI Licensing Administrator specifies this cable category for systems using up to 48Gbps bandwidth and high-resolution modes such as 4K at 120Hz and 8K at 60Hz.

Cable length, build quality, and the specific connection between the adapter and display can also affect signal stability. For troubleshooting flickering or intermittent black screens, use a suitable certified cable and test with a shorter cable when practical.

Do not assume that a cable is certified simply because the packaging says “8K,” “HDMI 2.1,” or “48Gbps.” Look for the appropriate certification identification and confirm the cable model if the distinction matters to your setup.

Common problems and how to fix them

The monitor only offers 60Hz. Confirm the adapter’s maximum mode, the GPU’s DisplayPort capabilities, the monitor’s HDMI input specifications, and the Windows or graphics-driver refresh-rate settings. Some displays support high refresh rates only on certain HDMI ports.

The screen goes black at 4K 120Hz. Check whether the GPU supports the required DSC mode, install applicable graphics drivers, and review the monitor or TV’s input-format settings and firmware guidance. Test another suitable HDMI cable and reduce the refresh rate temporarily to isolate the cause.

HDR is available, but VRR is missing. Check the exact adapter documentation. HDR and VRR are separate functions, and some adapters explicitly do not support variable refresh rate. Windows, the graphics driver, and the display also need to support and enable VRR for the relevant input.

The adapter works in one direction but not the other. This is expected for a unidirectional converter. Confirm the source and display connectors before ordering and do not confuse DP-to-HDMI with HDMI-to-DP.

An 8K-rated adapter does not reach 8K 60Hz. Check the exact GPU model, DSC support, display input, cable, drivers, and any required television settings. A maximum supported resolution is conditional on the entire signal chain rather than the adapter alone.

Frequently asked questions

Can DisplayPort 1.4 output 4K at 120Hz over HDMI 2.1?

Yes, with a compatible active adapter and a suitable source and display. Many high-resolution modes require DSC on the DisplayPort side. The adapter’s advertised capability, the GPU’s support, the monitor’s HDMI input, and the HDMI cable must all be compatible.

Will a DisplayPort 1.4 to HDMI 2.1 adapter support 4K at 240Hz?

Some models advertise that capability. Cable Matters 102101 is specified for up to 4K at 240Hz, but the source and display must also support the mode. Cable Matters explicitly states that its adapter does not support VRR, G-Sync, or FreeSync.

Can I use one of these adapters with a PS5 or Xbox?

Not as intended. These products convert a DisplayPort source to an HDMI display, whereas PlayStation and Xbox consoles output HDMI. Connecting a console to a DisplayPort-only monitor requires a converter designed for the opposite signal direction, with its own compatibility requirements.

Does an HDMI 2.1 adapter automatically support HDR and VRR?

No. Check the exact product specification for HDR, VRR, and any other necessary feature. The interface label alone does not prove that all HDMI 2.1 features are supported by a particular adapter.

Do I need a separate HDMI cable?

Yes, for Cable Matters 102101, the UPTab dongle, and UNITEK V1617AGY01, which use female HDMI outputs. The StarTech 133DISPLAYPORTHDMI21 is an integrated 6.6-foot cable, so it connects directly between the DisplayPort source and HDMI display.

Conclusion

Cable Matters 102101 is the strongest specification-based choice here if you want advertised fixed-refresh output up to 4K 240Hz and can live without VRR. Choose UPTab’s active dongle if its manufacturer-listed VRR support is important, while StarTech makes sense if you prefer a single integrated cable. UNITEK V1617AGY01 is another option for 4K 120Hz or 8K 60Hz. Before buying, verify your GPU’s DSC support, the monitor’s HDMI input capabilities, the exact target refresh rate, and the adapter’s gaming-feature limitations. No adapter can guarantee compatibility across every PC and display combination.