Display · Class

DisplayPort to HDMI: passive adapter class

Passive DisplayPort-to-HDMI conversion requires a source with DisplayPort dual-mode (DP++) support.

DisplayPortend A

HDMI Type-Aend B

Directionaldirection evidence

Passiveconversion

Endpoint map

Start with what is physically represented

DisplayPort source to HDMI display in the represented passive class.

DisplayPort reference →HDMI Type-A reference →Compare references with these ends →Canonical cable/adapter note →

Capability ledger

Six questions kept separate

DataNot Applicable

No general-purpose data role represented.

Power / chargingNot Applicable

No independent power requirement established for passive class.

VideoConditional

Requires source-side DP++ support.

Evidence: C044A

ConversionPassive

Represented class is passive and depends on DP++ source support.

Evidence: C044A

Length / reachNot Established

No class-wide length limit asserted.

Markings / certificationNot Established

No marking scheme asserted.

Explicit unknowns

Exact HDMI mode support remains source/cable/display specific.

Source boundary

Why this profile says what it says

Back to first citation ↑

C044ASource checked · pending review

The cited passive DisplayPort-to-HDMI adapter class requires a DisplayPort dual-mode (DP++) source; the DP2HDMI2 manufacturer document states that requirement.

Scope: Manufacturer-documented passive DP++ adapter class; not every adapter, reverse conversion, universal resolution, audio support or device compatibility. · review due 2027-01-19

C044BSource checked · pending review

DP2HD4KADAP is listed as passive, with a DisplayPort input and HDMI output; its source must support DP++ HDMI/DVI pass-through.

Scope: Exact DP2HD4KADAP; an unknown source feature remains unknown, not a compatibility result. · review due 2027-01-11

C044CSource checked · pending review

The passive DP2HD4KADAP sheet lists 3840 x 2160 at 30 Hz and no HDR support.

Scope: Exact-model counterexample to a universal active-for-4K rule. No claim that all passive adapters or all DP++ sources support this mode. · review due 2027-01-11

C044DSource checked · pending review

VESA limits passive DisplayPort to HDMI or DVI adapter operation to DisplayPort source devices with DP++ capability; equipment documentation must establish that feature.

Scope: General passive adapter prerequisite, not approval for any adapter part or video mode · review due 2027-01-13

USB-IF · USB4 system overview, 2019

Historical first USB4 generation, up to 40 Gbit/s.

Open source ↗

USB4 system performance overview · Not the ceiling of later USB4 revisions.

Common questions

Questions this record can help resolve

Why can a DisplayPort/HDMI adapter work only one direction?Treat source/sink direction and active/passive conversion as evidence questions rather than assuming a reversible physical path.

Evidence behind this page

Scope first. Source second. Approval separate.

4 linked sources · 4 scoped claims · 0 sources with inspection/access flags.

Page scope: class

Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 4 source scopes, access limits and dates

S039 · USB4 system overview, 2019

USB-IF · Standards-organization domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: Historical first USB4 generation, up to 40 Gbit/s.

Not established / limitations: Not the ceiling of later USB4 revisions.

Locator: USB4 system performance overview

S634 · DP2HD4KADAP passive DisplayPort-to-HDMI adapter — manufacturer datasheet

StarTech.com · Manufacturer / product-owner domain · inspected 2026-10-13 · due 2027-01-11

Within inspection window

Scoped support: Exact DP2HD4KADAP example: DP source to HDMI display, DP++ requirement and stated 3840 x 2160 at 30 Hz. Not a family-wide ceiling or device guarantee.

Not established / limitations: No printed issue/revision date observed. Latest revision unconfirmed. Broad marketing language and conflicting cable-distance statements not promoted. Raw bytes not retained or hash-certified.

Locator: Product ID / Features / Hardware / Performance / System and Cable Requirements; all four rendered pages observed. Parsed text and page images have different table ordering.

S644 · Get Connected: DisplayPort dual-mode adapter boundary

VESA / DisplayPort · Standards-organization domain · inspected 2026-10-15 · due 2027-01-13

Within inspection window

Scoped support: Passive conversion to HDMI/DVI requires DP++ at source; not a statement that a particular device implements it

Not established / limitations: Source states a conditional adapter capability; not a blanket promise of resolution or interoperability.

Locator: Get Connected, footnote below How It Works illustration

S846 · DP2HDMI2 DisplayPort to HDMI passive adapter datasheet

StarTech.com · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: DP2HDMI2 is explicitly passive and requires DP++ at the video source. The claim is narrowed to the cited passive-adapter class.

Not established / limitations: Named product and source direction only; no reverse conversion, universal resolution/audio promise, hardware test or adapter recommendation. All4pages read as text; only pages1and2 visually inspected. VESA's31January2013 dual-mode release announcement was also read as context, not as current universal performance evidence.

Locator: Page1 passive adapter/DP++ requirement paragraph; page2 Special Notes/Requirements; page3 Hardware Active or Passive Adapter.

Trace 4 claims to their source records

C044A · P044

The cited passive DisplayPort-to-HDMI adapter class requires a DisplayPort dual-mode (DP++) source; the DP2HDMI2 manufacturer document states that requirement.

Claim scope: Manufacturer-documented passive DP++ adapter class; not every adapter, reverse conversion, universal resolution, audio support or device compatibility.

Source links: S846 · Evidence trail → (private workspace)

C044B · P044

DP2HD4KADAP is listed as passive, with a DisplayPort input and HDMI output; its source must support DP++ HDMI/DVI pass-through.

Claim scope: Exact DP2HD4KADAP; an unknown source feature remains unknown, not a compatibility result.

Source links: S634 · Evidence trail → (private workspace)

C044C · P044

The passive DP2HD4KADAP sheet lists 3840 x 2160 at 30 Hz and no HDR support.

Claim scope: Exact-model counterexample to a universal active-for-4K rule. No claim that all passive adapters or all DP++ sources support this mode.

Source links: S634 · Evidence trail → (private workspace)

C044D · P044

VESA limits passive DisplayPort to HDMI or DVI adapter operation to DisplayPort source devices with DP++ capability; equipment documentation must establish that feature.

Claim scope: General passive adapter prerequisite, not approval for any adapter part or video mode

Source links: S644 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.