Guide note · not an individual product specification
The useful distinction
Understand the requirement.
Follow the output group as well as the physical port. [C156A]
WD22TB4 has mutually exclusive video ports and a distinct Apple-host dual-display topology. [C156B]
Bounded facts, visible unknowns
Specifications and limits
More sockets do not mean more independent displays facts and limitations
Workflow boundary
One host, one dock, direct independent display paths only. [C156A][C156B]
Verified device list
Not included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.
The worksheet preserves shared hardware resources. Choosing two alternative outputs can create a conflict even when the dock has enough connectors to accept both cables.
Before you connect
What to check
Identify host, dock and monitor models.
Keep native, software and shared-resource findings separate.
For the recorded Dell Apple-host scope, two conventional outputs do not establish two independently extended desktops. The worksheet flags that topology rather than relabeling mirrored images as success.
Do not count a data port as a video output
Only source-documented video outputs appear in the output selector. USB data sockets remain in device reference pages without being promoted into display paths.
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
C156ASource checked · pending review
TS4 documents alternative dual-display arrangements using its DisplayPort and downstream Thunderbolt sockets.
Locator: Single / Dual Monitors; FAQ: How do I connect dual monitors? Access: public page. Same URL as S064, newly inspected for broader display scope; not independent corroboration. No 8K/6K timing table or image was transcribed.
Locator: Non-Thunderbolt / Thunderbolt tables; Port disablement; Important Access: public page. Selected table rows only, not an exhaustive solver. English text was returned through a localized Dell route. Host HBR/DSC is not inferred from a Thunderbolt logo.
Locator: Functionality; Limitations; Dual Monitor Setup Access: public page. Apple chip limits still apply. This is not evidence that every later firmware, OS or exact monitor pair was tested. Charging is outside this extension.
Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Assessment 2026-10-22 · earliest scheduled source review 2027-01-01. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.
Scoped support: TS4 video outputs and host-dependent display counts.
Not established / limitations: Same URL as S064, newly inspected for broader display scope; not independent corroboration. No 8K/6K timing table or image was transcribed.
Locator: Single / Dual Monitors; FAQ: How do I connect dual monitors?
Scoped support: WD22TB4 transport-dependent examples and mutually exclusive outputs.
Not established / limitations: Selected table rows only, not an exhaustive solver. English text was returned through a localized Dell route. Host HBR/DSC is not inferred from a Thunderbolt logo.
Locator: Non-Thunderbolt / Thunderbolt tables; Port disablement; Important
Scoped support: WD22TB4 Apple-host firmware scope and independent display paths.
Not established / limitations: Apple chip limits still apply. This is not evidence that every later firmware, OS or exact monitor pair was tested. Charging is outside this extension.
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.
