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Small black rectangular USB-C to DisplayPort adapter

HP

HP USB-C to DisplayPort Adapter N9K78AA#ABA

SKU CH-RQWT-AVKA1 MPN N9K78AA#ABA

Connect a USB-C tablet or notebook to a DisplayPort monitor, projector or TV with this compact black adapter

  • Adapter typeUSB-C to DP
  • Product typeUSB-C to DisplayPort Adapters
  • Product colorBlack
  • Key featuresShow and tell Connect the adapter to your tablet or notebook
  • Connect a USB-C device to a DisplayPort monitor
  • Compact adapter fits easily in a laptop bag
  • Bulk packaging reduces shipping waste
  • Supports video output to projectors and TVs
  • Black finish matches professional accessories

USB-C to DisplayPort Adapter

The HP N9K78AA#ABA adapter connects a USB-C equipped notebook or tablet to a DisplayPort monitor, projector or TV. It is intended for professionals and students who need a simple video link for presentations or extended desktop space. The compact black dongle fits in a laptop bag without adding bulk. Buyers who require multiple video outputs or legacy VGA connectivity cannot use this single-port adapter.

Passive Operation

The unit draws power directly from the host USB-C port and has no fan or external supply. Operation is silent and adds negligible load to the source device during typical office use. No driver installation is required on supported operating systems. The adapter produces no audible noise and generates minimal heat under normal conditions.

Sustained Video Output

During extended sessions the adapter maintains a stable DisplayPort signal without thermal throttling. The passive design relies on the host port thermal budget, so continuous 1080p or higher streaming remains consistent. Signal integrity holds across long meetings or multi-monitor workflows. Users needing active signal conversion for very long cable runs should verify compatibility separately.

How it compares

Measured against everything we stock in USB Graphics & Display Adapters, at today’s prices. Recalculated every night.

Price $54.99
Pricier than about 85% of the 749 comparable items (median $23.99).

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Specifications

Product
Brand nameHP
Model nameN9K78AA#ABA
Product typeUSB-C to DisplayPort Adapters
Adapter typeUSB-C to DP
Product colorBlack
Size & build
Cable lengthNo
Shipping weight0.14 kg
Package size229 × 109 × 25 mm

Questions about this item

How do I connect the HP N9K78AA#ABA adapter to my laptop and external display?

Insert the USB-C plug into the host port and attach a DisplayPort cable from the adapter to the monitor; the step often missed is ensuring the host USB-C port supports video output.

Will the adapter itself need replacement or maintenance over time?

The unit has no moving parts or firmware updates; replacement is only needed if the housing or connectors suffer physical damage.

What is the first limitation encountered during sustained high-resolution use?

Sustained high-bitrate video can cause the compact enclosure to become warm, which may trigger thermal throttling on the host port.

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