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Zorluk: OrtaNetwork and Peripheral Cables and Connectors

A desktop technician connects a USB-C docking station to a laptop's USB-C port. USB peripherals and pass-through power plugged into the dock function as expected, but the external display connected via HDMI to the dock shows 'No Signal'. Which of the following is the most likely cause of this issue?

  1. The laptop's USB-C port lacks support for DisplayPort Alternate Mode or Thunderbolt protocols.Cevap
  2. B
    The USB-C interface is restricted to data transfers and requires a USB 3.2 Gen 2x2 PCIe expansion card to carry video.
  3. C
    HDMI video signals over USB-C require an active power injector cable to boost digital signals to the monitor.
  4. D
    The USB-C cable connecting the dock must be wired in a crossover pinout configuration for display data.

Cevap

The laptop's USB-C port lacks support for DisplayPort Alternate Mode or Thunderbolt protocols.
While the USB-C physical connector is standardized across modern laptops, video output through a dock requires the host port to explicitly support DisplayPort Alternate Mode (Alt Mode) or Thunderbolt. If a host port only supports standard USB 3.2 data, data peripherals and power delivery will function, but video signals cannot be routed to the dock's monitor outputs.

Adım Adım Çözüm

1
Analyze the reported symptoms
Power delivery and standard USB peripheral data function properly, indicating physical physical connectivity and USB data controller operation are working.
This isolates the failure specifically to video signal transport through the USB-C link.
2
Evaluate USB-C standard capabilities versus physical form factor
Video transmission over a USB-C physical connection requires host hardware support for DisplayPort Alternate Mode (Alt Mode) or Thunderbolt protocols.
Physical USB Type-C connectors do not automatically guarantee video output capability unless implemented by the motherboard/host controller manufacturer.

Anahtar Kavram

USB-C Physical Form Factor vs. Protocol Standards (DisplayPort Alt Mode)
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Konular

Network and Peripheral Cables and Connectors

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