THE BUYING DESK / PUBLIC-SOURCE SHORTLIST
An HDMI-output computer feeding a DisplayPort-input monitor needs a converter designed for that direction. Reversing a common DisplayPort-to-HDMI lead will not turn it into the required product.
01 / CHECK THE COMPLETE SETUP
Label the endpoints: HDMI source → active HDMI-to-DP converter → DisplayPort monitor. Plan the converter’s USB power separately from the video path, and check the target monitor mode before selecting a headline such as 4K.
Do not substitute a similar product name or a different regional package. The sources linked under each entry support the named model and its stated conditions.
02 / THE COMPARISON
Scroll the table horizontally on a small screen. Limits are manufacturer claims, not measurements. Ask the maker about a condition that is decisive and still unknown.
| Model | Documented display ceiling | Video connector layout | USB power arrangement | Feature / compatibility condition | Reason to pause before purchase |
|---|---|---|---|---|---|
| 01Cable Matters 4K30 socket adapter103069-BLACK | Up to 3840×2160 at 30Hz; 2560×1440 or 1920×1080 at 60Hz | HDMI source plug → DP output socket; separate DP cable required | Included USB power lead; maker recommends connecting it before the monitor | One-way active conversion; explicitly not for 4K60, VRR or high-refresh gaming | Some 4K monitors limited to 1440p60; maker does not recommend DP KVM use |
| 02StarTech 4K60 HDR adapter128-HDMI-DISPLAYPORT | Up to 3840×2160 at 60Hz with HDR; also lists 3440×1440 at 60Hz | HDMI 2.0 source → DP 1.2 display; DP socket with 30cm attached video lead | Attached 30cm USB-A lead to powered USB port or suitable USB wall charger | Manufacturer lists HDCP 2.2 and two-channel DP audio; driverless native video conversion | Both endpoints and DP cable must support the chosen mode; no blanket VRR or console claim |
| 03StarTech integrated converter cableHD2DPMM6 | Up to 3840×2160 at 30Hz; HDMI1.4-to-DP1.2 conversion | HDMI male → full-size DP male; nominal 6ft cable, no extra video lead | USB powered, with attached USB-A power branch | Manufacturer lists audio; active one-way HDMI-source-to-DP-display path | 4K30 ceiling; datasheet lists 1.8m cable and 2.0m overall product length, so plan actual reach |
03 / THE EXACT MODELS
Exact model: 103069-BLACK
A verified office display path within its documented mode limits, using a separate DP cable.
The requirement is 4K60, VRR, high-refresh gaming or an unverified DP KVM chain.
Also compare: 128-HDMI-DISPLAYPORT for a verified 4K60 HDR path
Exact model: 128-HDMI-DISPLAYPORT
An HDMI-output computer and compatible DP monitor that need the documented 4K60 or HDR arrangement.
You require an unsupported high-refresh/VRR mode or assume every HDMI source offers the same output.
Also compare: 103069-BLACK when its lower ceiling and monitor restrictions meet the task
Exact model: HD2DPMM6
A fixed computer-to-monitor route where the integrated cable layout and 4K30 ceiling are sufficient.
You need a replaceable separate DP lead, more reach, 4K60 or a verified gaming-feature path.
Also compare: The socket-style 4K60 adapter when its requirements fit
04 / PUT IT TO WORK
Confirm which laptop HDMI mode and monitor DP mode overlap. A 1440p60 target and a 4K60 target can lead to different converters even though the two physical ports are unchanged.
A socket adapter can retain that routed cable; the integrated HD2DPMM6 replaces it. Account for the USB power lead’s reach and nearby port clearance rather than evaluating video cable length alone.
Require exact converter, source and destination compatibility. HDMI version and a 4K label are insufficient evidence for the required timing, VRR, HDCP behavior or switching. The Cable Matters entry explicitly warns against DP KVM use.
05 / EVIDENCE & SCOPE
This comparison separates a 4K30 socket adapter, a 4K60 HDR socket adapter and an integrated 4K30 cable. It is not a gaming-performance ranking. We have not measured signal stability, latency, HDR output or console compatibility. No VRR, 120/144Hz, DisplayPort KVM or universal console support is inferred from the connector names. Use each exact product ID and verify the complete source/display path.
Each entry has an original fit explanation, an exclusion and an alternative. We selected the models for distinct documented arrangements rather than copying another publication's order. Unknown fields are not filled by estimates, and manufacturer marketing measurements are not relabeled as independent tests.
Read our editorial method and commercial disclosures. For the complete host path, see the buying guides and the USB-C hub comparison.
SCENARIO WORKSHEET
| Video source | Display input | What to investigate |
|---|---|---|
| HDMI | DisplayPort | Active HDMI-to-DP converter with a supported power path |
| DisplayPort | HDMI | DP-to-HDMI adapter; passive only where source and mode permit |
| Video-capable USB-C | DisplayPort | Documented USB-C-to-DP cable or adapter |
| HDMI | Computer USB port for recording | USB HDMI capture device, not a monitor converter |
The converters above are for a DP monitor input, not a laptop’s HDMI input. Most laptop HDMI sockets are outputs; fitting a converter does not make the built-in laptop panel an external monitor. If the task is recording another device on the laptop, use USB HDMI capture cards and check the software preview requirements.
USB supplies operating power to these active conversion arrangements. It does not mean the product captures HDMI video into the USB computer, carries USB peripherals to the display, or charges the laptop. A monitor USB hub port may or may not remain powered when the monitor sleeps; verify its documented behavior if that port will power the converter.
For 103069-BLACK, follow the maker’s power-first connection advice. Do not interpret optional power wording as a guarantee that every HDMI output can run the converter unaided. For the StarTech 4K60 model, plan access to a suitable powered USB connection within the attached lead’s reach.
For a fixed cable route, HD2DPMM6’s technical dimensions distinguish cable length from total product length. Leave slack for connectors and strain relief; a nominal length is not a guarantee that a cable reaches between tightly spaced rear ports.
A 4K30 converter does not meet a 4K60 requirement. Separately, 4K60 does not establish VRR, 120Hz, HDR at every color format, or support for every console. First write down resolution and refresh rate, then the color/HDR and synchronization features the source and monitor must retain.
If a direct HDMI or DP connection is available, compare the native input choices first. Adding conversion may satisfy a connector mismatch, but it does not increase the source’s display capability.
Check the product’s printed direction and the source/display labels first. Connect the specified USB power, select the monitor’s DP input and choose a documented conservative mode. Remove KVMs, extenders and extra converters for a direct check; record which step changes the result.
A DP-to-HDMI adapter in the drawer belongs to the opposite conversion path. A USB-C-output source may fit a direct USB-C-to-DP arrangement instead. If the complete chain remains undocumented, obtain an exact compatibility answer before treating another purchase as the diagnosis.