Official source claims and bounded deductions. Compatibility and evidence basis are separate.
Active ruleset launch.2.2-11acc3209d59 · All hardware claims are documentation-based.
Manufacturer documented#A1 M3 Air requires macOS Sonoma 14.3+, external power, closed lid and external input devices for two native external displays.
Apple: M3 two-display requirements ↗
Source location: Requirements and connection sequence
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A3 13-inch M3 Air has two Thunderbolt / USB4 ports and supports one external display with the built-in display active.
Apple: 13-inch M3 Air (2024) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A4 M4 Air has two Thunderbolt 4 ports; up to two external 6K60 displays alongside its built-in display.
Apple: 13-inch M4 Air (2025) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A5 M5 Air supports two external displays alongside the built-in display, including up to two over one Thunderbolt port. This does not certify an arbitrary dock.
Apple: 13-inch M5 Air (2026) specifications ↗
Source location: External Display Support
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D1 U2723QE supports 3840×2160 at 60Hz through the USB-C 90W video input. Its original cables include USB-C to C 1m and DP to DP 1.8m. Data-only USB-C is not video.
Dell U2723QE user guide ↗
Source location: Rev A05 (September 2023), pp. 7–8 package contents; p. 12 port 5; pp. 15–17 input/mode specifications; p. 19 cables
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: latest automated retrieval failed; reviewed claim remains separate.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D2 Latitude 7450 has two Thunderbolt 4 ports with DisplayPort Alt Mode. The documentation describes two 4K display support.
Dell Latitude 7450: left ports ↗
Source location: Left, ports 2 and 3
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D3 DisplayPort MST daisy chaining does not provide independent extended desktops on macOS.
Dell: monitor daisy chains ↗
Source location: DisplayPort and USB-C MST restrictions
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D4 WD22TB4 HDMI and MFDP USB-C video outputs are mutually exclusive. Presence of both ports does not allow simultaneous video.
Dell WD22TB4 simultaneous output ports ↗
Source location: Important information; dual-display setup
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#C1 Current TS4 documentation includes base M4 for two displays and permits two USB-C monitors on the two downstream Thunderbolt 4 ports.
CalDigit TS4 current product documentation ↗
Source location: Compatibility; dual displays; connect two monitors option 3
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#C2 Connect the included Thunderbolt cable to Computer. Two downstream Thunderbolt ports support USB-C display connections. Supplied PSU required; host charging up to 98W.
CalDigit TS4 user guide ↗
Source location: Pages 7, 15, 17: host connection, option 3, included components
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#P1 MSTH2 is a native MST dual HDMI adapter; dual 4K60 needs the documented DP1.4 and DSC context; macOS outputs do not independently extend.
Plugable USBC-MSTH2 ↗
Source location: Compatibility; DisplayPort DSC
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#P2 6950M is a two-HDMI DisplayLink adapter requiring software. It does not provide laptop charging and is not 6950U.
Plugable USBC-6950M ↗
Source location: Compatibility and hardware specifications
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#P3 Current six-video-connector UD-ULTC4K has a native DISPLAY1 and DisplayLink DISPLAY2/3. Select one connector within each display group.
Plugable UD-ULTC4K current revision ↗
Source location: DISPLAY1/2/3 and port specifications
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#P4 DISPLAY2 and DISPLAY3 require DisplayLink software; DISPLAY1 uses native DisplayPort Alt Mode.
Plugable UD-ULTC4K output technology ↗
Source location: Display output types
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#P5 Selected Mac two-display connections require one output from each group. M3 closed-lid rules remain host-specific.
Plugable TBT4-UDZ output capabilities ↗
Source location: macOS; output groups; M3
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#C3 Original Element Hub TB4 provides up to 60W host charging. Do not substitute the Element 5 record.
CalDigit original Thunderbolt 4 Element Hub ↗
Source location: Compatibility and power
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A6 A2119 has a single HDMI video output; its USB-C socket is for power. A1621 has different video limits.
Apple Digital AV Multiport Adapter ↗
Source location: Models A2119 and A1621; USB-C port
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#L1 DisplayLink Manager needs the applicable macOS screen-capture permission; software and OS version matter.
DisplayLink: macOS Screen Recording permission ↗
Source location: Permission procedure
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#L2 Protected video can be unavailable while DisplayLink screens are connected on macOS.
DisplayLink: protected video on Mac ↗
Source location: Content protected video
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#W1 Select Extend when independent desktops are needed; isolate adapters and test a known suitable cable and display.
Microsoft: external monitor troubleshooting ↗
Source location: Before you begin; troubleshoot connections
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#W2 USB-C shape alone does not establish video support; capability must match at the host, cable and display.
Microsoft: USB-C connection problems ↗
Source location: Display connection might be limited
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D5 Mac charging ceilings differ by documented PD/firmware context. Exact WD22 Mac charging remains unresolved here.
Dell Thunderbolt docks and Apple hosts ↗
Source location: Power delivery and Apple topology
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: available. Last successful retrieval: 2026-09-18.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#D6 The U3223QE supports 3840×2160 at 60Hz through its USB-C 90W video input. The shared manual explicitly lists its supplied USB-C to C 1m and DP to DP 1.8m cables; USB-C data-only ports are not video inputs.
Dell U3223QE: exact inputs and supplied cables ↗
Source location: Rev A05 (September 2023): pp. 7–8 package contents; p. 12 video input; pp. 15–16 modes; p. 19 cable types
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A7 15-inch M3 Air supports one native external display with its built-in display active and a second with the lid closed, subject to Apple M3 OS, power and input-device conditions.
Apple: 15-inch M3 Air (2024) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A8 15-inch M4 Air has two Thunderbolt 4 ports and supports two external displays up to 6K60 alongside its built-in display.
Apple: 15-inch M4 Air (2025) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A9 15-inch M5 Air supports two external displays alongside its built-in display, including two over one Thunderbolt port. The host rule does not certify an arbitrary dock.
Apple: 15-inch M5 Air (2026) specifications ↗
Source location: External Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A10 M1 MacBook Air (2020, 13.3-inch) documents one native external display up to 6K60 and native DisplayPort over USB-C. Closing the lid does not document a second native external display.
Apple: MacBook Air M1 (2020) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#A11 13.6-inch M2 MacBook Air (2022) documents one native external display up to 6K60 and native DisplayPort over USB-C; do not inherit the M3 dual-display clamshell rule.
Apple: MacBook Air M2 (2022) specifications ↗
Source location: Display Support; Charging and Expansion
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#C4 Current TS4 documentation explicitly includes base M4 and M5 Macs for two external displays. Two compatible USB-C monitors may connect directly to the two downstream Thunderbolt 4 ports; ordinary USB-C data ports do not substitute.
CalDigit TS4: current M5 dual-display compatibility ↗
Source location: Single or Dual Monitors; base M4/M5 compatibility; dual monitors option 3
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#W3 Windows 11 provides Identify and Detect controls in display settings and Windows+P display modes. Extend creates a desktop across supported connected monitors; settings do not add missing hardware capability.
Microsoft: use multiple monitors in Windows ↗
Source location: Identify and detect displays; Multiple displays; Windows+P
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-10-18
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#U1 USB-C connector shape alone does not establish a cable display or data capability. Match the documented cable and port capabilities; certification does not add a missing host display capability.
USB-IF: USB cables and connectors ↗
Source location: Cable and connector specification resources
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#T1 Thunderbolt 3 and Thunderbolt 4 can use 40Gbps links; Thunderbolt 4 certification defines additional minimum capabilities. Exact host, dock and output specifications still govern a display plan.
Intel: Thunderbolt 4 accessory requirements ↗
Source location: Thunderbolt 3 versus Thunderbolt 4 capabilities
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
Manufacturer documented#T2 Thunderbolt 5 supports 80Gbps bidirectional bandwidth and up to 120Gbps in Bandwidth Boost for display-intensive use. The boost figure is not a generic 120Gbps bidirectional data-transfer promise.
Intel: Thunderbolt technology overview ↗
Source location: Thunderbolt 5 bandwidth and Bandwidth Boost
Evidence reviewed 2026-09-18 · Rule v1 · Next review 2026-12-17
Source retrieval: automated check not yet recorded.
Limitations and evidence basis
Official documentation. Component-derived connection plans are not independently demonstrated end-to-end. No physical test by NYBreaking.
