UGREEN CM654 USB-C to DisplayPort 2.1 Adapter, 80 Gbps

Gbps: UGREEN CM654 is a one-way USB-C to DisplayPort 2.1 adapter for sending video and audio from compatible USB-C or Thunderbolt devices to a DisplayPort display. Its listed high-resolution and refresh-rate modes depend on the source, display and DSC support.

At a glance

The listing claims up to 80Gbps bandwidth and multiple high-refresh modes, including 4K@480Hz and 1440P@500Hz.
Supports Dynamic HDR, HDCP 2.3 and AMD FreeSync and NVIDIA G-Sync, according to the listing.
The claimed connection supports USB-C DP Alt Mode and Thunderbolt 3/4/5 sources with a DisplayPort display.
Listed modes include MST daisy-chain, mirror and extend, Galaxy DeX and MacBook clamshell.

Price

$25.59Save 20%

Reference price: ~~$31.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

One compact connection path for compatible USB-C or Thunderbolt sources and DisplayPort displays.
The range of listed resolution and refresh-rate options may suit high-refresh gaming displays when the source and display support them.
Claims support for audio and video together, HDR and variable refresh technologies.

Cons

It is unidirectional, so it cannot send a DisplayPort source signal to a USB-C display.

Technical specifications

14 specifications

Identity
Brand	UGREEN
Model	CM654

Connections and compatibility
Connector type	USB Type C, DisplayPort
Compatible devices	Laptop, Tablet, Smartphone, Gaming Handheld
Number of ports	2

Video and audio claims
Bandwidth	80Gbps
Maximum listed resolution and refresh rate	16K@60Hz(DSC)
Other listed resolution and refresh rates	8K@120/60Hz, 4K@480/240/165/144/120Hz, 1440P@500/480/360/240Hz and 1080P@360Hz
HDR and colour	Dynamic HDR, 48-bit color depth
Content protection	HDCP 2.3
Variable refresh rate	AMD FreeSync and NVIDIA G-Sync
Audio formats	dolby atmos sound, like DTS-HD, Dolby-trueHD, LPCM 7.1, DTS, Dolby-AC3

Physical details
Colour	Aluminum
Finish	Metallic

What to know before buying

Listing details to confirm

The listing is inconsistent about product type and generation, calling it an adapter or cable and variously describing Thunderbolt 3/4/5, Thunderbolt 4/5 or USB-C DP Alt Mode. It also lists several maximum modes, including 16K@60Hz with DSC, without confirming which source and display combinations achieve them. Check device and monitor support, including DSC, before relying on a particular resolution, refresh rate, MST or audio mode. DisplayPort is not Mini DisplayPort or HDMI.

Who is it for?

A good fit for

People connecting a USB-C or Thunderbolt laptop, tablet, smartphone or gaming handheld to a DisplayPort monitor or TV.
Buyers seeking a high-refresh external display connection, provided their source and display support the chosen mode.

Less suited to

Anyone needing bidirectional conversion or a DisplayPort-to-USB-C connection.
Displays or sources that lack the appropriate USB-C DP Alt Mode or Thunderbolt support, or the required DisplayPort connector.

UGREEN CM654 USB-C to DisplayPort 2.1 Adapter, 80 Gbps · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 151 ratings

5 stars82%82%
4 stars7%7%
3 stars6%6%
2 stars2%2%
1 star3%3%

The supplied evidence contains aggregate ratings but no customer-comment summary, so it cannot establish what buyers praised or criticised. The rating distribution skews strongly toward five-star ratings while also including lower ratings. Treat this as a broad signal rather than confirmation of compatibility or performance, which depend on the source, display and selected operating mode.

Frequently asked questions

Which way does the UGREEN CM654 carry the signal?

The listing specifies signal from a USB-C source to a DisplayPort monitor or TV only. It is not bidirectional.

Does it guarantee 16K at 60Hz?

No. The listing claims 16K@60Hz with DSC, but actual modes depend on the source, display and DSC support. Confirm both devices support the mode you want.

Can it connect to an HDMI or Mini DisplayPort display?

The listed output is DisplayPort. The listing cautions that DisplayPort differs from HDMI and Mini DisplayPort, so this adapter is not stated to connect directly to either.

Does it support high-refresh gaming?

The listing claims FreeSync and G-Sync support and lists high-refresh modes. The source and display must also support the selected resolution and refresh rate.