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Difficulty: Very hardMobile Device Ports and Accessories

Match each mobile device physical port or interface specification on the left with its precise functional characteristics and bandwidth capability on the right.

  • USB-C with Thunderbolt 4Reversible 24-pin connector supporting up to 40 Gbps data transfer, 100W Power Delivery, and dual 4K display output via DisplayPort Alt Mode.
  • USB 3.2 Gen 2x2 Type-CReversible 24-pin connector utilizing dual-lane operation to achieve up to 20 Gbps data throughput over native USB protocols.
  • Micro-USB with On-The-Go (OTG)Non-reversible 5-pin trapezoidal connector using USB 2.0 signaling that allows a mobile device to switch between host and peripheral roles.
  • Proprietary 8-pin LightningReversible 8-pin digital connector used on legacy Apple mobile devices operating primarily at USB 2.0 transfer speeds.

Answer

USB-C with Thunderbolt 4 matches the 24-pin 40 Gbps connector with dual 4K display support; USB 3.2 Gen 2x2 Type-C matches the 24-pin 20 Gbps dual-lane connector; Micro-USB with OTG matches the 5-pin trapezoidal connector enabling host/peripheral role switching; Proprietary 8-pin Lightning matches the reversible Apple connector operating at USB 2.0 speeds.
Each mobile interface is correctly paired based on pin configuration, physical form factor, maximum data throughput, and specific feature capabilities (such as USB OTG host switching, dual-lane USB 3.2 transmission, or Thunderbolt 4 video/PCIe tunneling).

Step-by-Step Solution

1
Identify the high-bandwidth USB-C implementation supporting video and PCIe tunneling.
Recognize that Thunderbolt 4 over USB-C provides 40 Gbps throughput, multi-monitor display capabilities, and high power delivery.
Thunderbolt 4 mandates 40 Gbps throughput and support for two 4K displays or one 8K display.
2
Differentiate native USB 3.2 multi-lane capabilities from Thunderbolt.
Match USB 3.2 Gen 2x2 Type-C with dual-lane 20 Gbps operation.
USB 3.2 Gen 2x2 operates over Type-C using two RX/TX lanes at 10 Gbps each to achieve 20 Gbps maximum speed.
3
Analyze legacy Android/mobile port capabilities with host expansion features.
Match Micro-USB with OTG to the 5-pin non-reversible trapezoidal connector supporting host/device switching.
USB OTG specifies a mechanism allowing mobile devices to act as USB hosts when an OTG adapter grounds the 5th (ID) pin.
4
Identify Apple legacy mobile port specifications.
Match Proprietary 8-pin Lightning to the reversible 8-pin connector operating at USB 2.0 speeds.
Lightning connectors are 8-pin reversible proprietary interfaces used by Apple mobile devices, capped at USB 2.0 bus speeds on most mobile models.

Key Concept

Mobile Device Physical Connectors, Protocol Capabilities, and Bus Speeds
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Topics

Mobile Device Ports and Accessories

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