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Difficulty: MediumDisplay Cables and Connectors

A desktop technician is organizing video adapter inventory for an office workstation rollout. The deployment requires connecting workstation graphics cards to both modern digital displays and legacy analog projectors. Which of the following statements correctly describe DVI connector signal compatibility and capabilities? (Select TWO.)

  1. DVI-I connectors integrate both analog and digital video signals, allowing a passive DVI-to-VGA adapter to function.Answer
  2. DVI-D connectors support digital signals only, preventing passive pin adapters from delivering an analog VGA signal.Answer
  3. C
    DVI-A cables transmit high-resolution dual-link digital signals alongside legacy analog signals.
  4. D
    DVI-D ports automatically supply analog video output when connected using a USB Type-C Alt Mode cable.

Answer

DVI-I connectors integrate both analog and digital video signals, allowing a passive DVI-to-VGA adapter to function, and DVI-D connectors support digital signals only, preventing passive pin adapters from delivering an analog VGA signal.
DVI-I (Integrated) includes dedicated pin channels for both digital data and analog RGB signals, which enables passive pass-through adapters to route the analog pins directly to a VGA connector. Conversely, DVI-D (Digital) lacks the physical analog pins around the ground blade, meaning it cannot output an analog signal without an active digital-to-analog converter box.

Step-by-Step Solution

1
Identify the signal characteristics of DVI-I connectors.
DVI-I (Integrated) features four additional pins around the flat blade that carry analog RGB signals alongside the digital pins.
Because analog signals are natively present on DVI-I, a low-cost passive pin adapter can route those pins directly to a VGA (DB-15) connector.
2
Identify the signal characteristics of DVI-D connectors.
DVI-D (Digital-only) connectors omit the analog pins around the flat blade.
Without physical analog signal pins, DVI-D ports cannot output an analog signal to a VGA monitor via a simple passive adapter; an active signal converter is required.
3
Evaluate the statements regarding DVI-A and USB-C adapter claims.
DVI-A supports analog video only (no digital signal), while DVI-D lacks analog hardware capabilities regardless of external USB-C adapters.
DVI-A cannot transmit digital signals, and DVI-D hardware cannot natively output analog signals.

Key Concept

DVI interface signal types (DVI-I vs DVI-D vs DVI-A) and passive adapter compatibility
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Topics

Display Cables and Connectors

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