Cable Matters
Cable Matters 8K Unidirectional DisplayPort 1.4 to HDMI 2.1 Adapter
Bottom line: The Cable Matters 8K Unidirectional DisplayPort 1.4 to HDMI 2.1 Adapter ($24.99 on Amazon as of 2026-10-20 22:13 UTC): Full HDMI 2.1 bandwidth: 8K@60Hz, 4K@120Hz, and 4K@240Hz from one DP 1.4 source; main trade-off: unidirectional only: DP source to HDMI display, never the reverse.
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*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Full HDMI 2.1 bandwidth: 8K@60Hz, 4K@120Hz, and 4K@240Hz from one DP 1.4 source
- ✓ Works with RTX 4090/4080/4070 and RX 7900/6900 DisplayPort outputs
- ✓ Braided jacket plus molded strain relief resists the bend fatigue that kills thin adapters
- ✓ LED indicator confirms an active link, so you can rule out the adapter when troubleshooting
- ✓ HDR and surround-sound passthrough for OLED TVs like the Samsung S95D and LG C4
Cons
- ✗ Unidirectional only: DP source to HDMI display, never the reverse
- ✗ Not compatible with PS5 or Xbox, so it is PC-only
- ✗ No VRR, G-Sync, or FreeSync support, a real loss on a 240Hz gaming panel
- ✗ Requires a Certified HDMI 2.1 cable that is sold separately
Manufacturer description
Uni-Directional DisplayPort to HDMI: Step into the future of HDMI with the 8K DisplayPort to HDMI 2.1 adapter. The 8K DP to HDMI adapter connects a computer, laptop, or other source device with a DisplayPort connector to an HDMI TV or monitor—perfect for graphics cards with DisplayPort like NVIDIA RTX 4090 / RTX 4080 / RTX 4070 and AMD RX 7900 / RX 6900. (Note: Only works from DP (PC) to HDMI (display). Not compatible with PS5 or Xbox.) HDMI 2.1 Cutting-Edge Performance: The Display Port to HDMI adapter supports the latest HDMI 2.1 technologies with video resolutions up to 8K@60Hz, 4K@120Hz…
SpecPicks Verdict
SpecPicks scored Cable Matters 8K Unidirectional DisplayPort 1.4 to HDMI 2.1 Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Cable Matters's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this let me connect my PS5 or Xbox to a DisplayPort monitor?
No. This adapter is unidirectional and only runs from a DisplayPort source to an HDMI display. Cable Matters explicitly lists PS5 and Xbox as incompatible.
Can it really do 4K at 240Hz?
Yes, it supports up to 8K@60Hz, 4K@120Hz, and 4K@240Hz. Your GPU's DisplayPort output, the HDMI display, and the cable all have to support that mode too.
Does it support G-Sync or FreeSync?
No. VRR, G-Sync, and FreeSync are not supported on this adapter. If adaptive sync is essential, use a native HDMI or DisplayPort connection instead.
Do I need to buy an HDMI cable separately?
Yes. A Certified HDMI 2.1 cable is required and is not included. A standard HDMI 2.0 cable will not carry 8K@60Hz or 4K@240Hz.
Will it work with my RTX 4090 and an LG C4 OLED?
That is the intended pairing. Cable Matters lists the RTX 4090, 4080, and 4070 plus AMD RX 7900 and RX 6900 as source GPUs, and the LG C4 OLED and Samsung S95D among target displays.
Key Features
- Uni-Directional DisplayPort to HDMI: Step into the future of HDMI with the 8K DisplayPort to HDMI 2.1 adapter. The 8K DP to HDMI adapter connects a computer, laptop, or other source device with a DisplayPort connector to an HDMI TV or monitor—perfect for graphics cards with DisplayPort like NVIDIA RTX 4090 / RTX 4080 / RTX 4070 and AMD RX 7900 / RX 6900. (Note: Only works from DP (PC) to HDMI (display). Not compatible with PS5 or Xbox.)
- HDMI 2.1 Cutting-Edge Performance: The Display Port to HDMI adapter supports the latest HDMI 2.1 technologies with video resolutions up to 8K@60Hz, 4K@120Hz, and 4K@240Hz. Leverage advanced HDMI capabilities with this DisplayPort male to HDMI female adapter. (Note: VRR, G-Sync, or FreeSync are not supported. A Certified HDMI 2.1 cable (sold separately) is required.)
- Immersive HDR and Audio Experience: Hear every detail with surround sound support and enjoy vibrant visuals with HDR using this HDMI to DisplayPort adapter. This HDMI 2.1 to DisplayPort 1.4 adapter cable supports ultra-high 4K resolution at 240Hz for a superior viewing experience. (Ensure your dedicated GPU with DisplayPort output, HDMI display, and HDMI cable all support the desired resolution.)
- Durable and Thoughtful Construction: This premium DisplayPort to HDMI adapter features a braided cable jacket for enhanced durability, molded strain relief to reduce wear, and an LED indicator to confirm active connection. Ideal for connecting HDMI TVs or monitors to DisplayPort-equipped graphics cards.
- Optimised for Gaming and 4K Entertainment: The perfect companion for 8K or 4K Smart TVs like Samsung S95D OLED, LG C4 OLED / Flex 42LX3Q, or 120Hz / 240Hz gaming monitors like Samsung Neo G8 / G7 / Odyssey Ark, LG UltraGear 32GQ950 / 48GQ900, Dell Alienware AW3225QF / AW2725DF / G3223Q. This HDMI female to DisplayPort male adapter is built for gaming and multimedia PCs with GPU DP ports.
Full Specifications
| Brand | Cable Matters |
|---|---|
| Color | Black |
| Model | 102101-BLK |
| UnitCount | 1 |
| Manufacturer | Cable Matters |
| ItemPartNumber | 102101-GRY |
Ready to buy?
Cable Matters 8K Unidirectional DisplayPort 1.4 to HDMI 2.1 Adapter is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
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