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Core Tech
Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender

Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender

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$299.99at Best BuyObserved at 2:19 PM

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Our take on the Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender

The Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender is a portable add-on display that clips to a laptop and gives you one extra 15.6-inch 1080p IPS screen. It connects over HDMI or USB-C, so it works with most modern laptops and some older ones with the right adapter. At $299.99 at Best Buy as of November 5, 2026, it is the only new price listed, so there is no recent range to compare against.

Best forRoad warriors who need a second screen in hotel roomsSales and consulting work with client-facing slidesLaptop users who want a bigger screen without a desk monitorTravelers who prefer one extra panel over a full portable monitor
Pros
  • 15.6-inch 1080p IPS panel gives a sharp, color-stable image
  • Connects over HDMI or USB-C for broad laptop compatibility
  • Folds flat against the laptop lid for transport
  • No separate stand or power brick needed in most setups
Cons
  • Single extra screen, not a true dual-screen setup despite the name
  • Adds weight and bulk to a laptop bag
  • $299.99 is high for one 1080p portable panel
  • Clip-on mounting can feel less stable than a freestanding monitor

Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender prices at every store

  • Best BuyNew

    In stock

    $299.99Observed at 2:19 PM
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Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender price history

Lowest price we've seen: $299.99 on Nov 5 at Best Buy. Tracked across 1 store since Nov 5.

Specifications

Resolution
1920 x 1080
Connector Type
HDMI, USB-C
HD Format
1080p
Panel Type
IPS
Size
15.6 in

Questions and answers

Does it add one screen or two?
One. The extender attaches a single 15.6-inch 1080p panel to your laptop, so you end up with two screens total, not three.
Will it work with my laptop?
It needs an HDMI or USB-C video output. Most laptops from the last several years have one; check that your USB-C port supports DisplayPort video, not just charging.
Is the price good?
Best Buy lists it at $299.99 as of November 5, 2026, and it is the only new price shown. Comparable 15.6-inch portable monitors often sell for less, so compare before buying.
How does it attach to the laptop?
It clips or slides onto the back of the laptop lid and folds flat for travel. Expect extra weight and thickness in your bag.
What is in the box?
Typically the panel, a USB-C cable and an HDMI cable. Confirm the cable bundle with the seller, since HDMI-only laptops may need a separate adapter.
Is it good for gaming?
It is a 1080p IPS panel aimed at productivity. Refresh rate and response time are not marketed for gaming, so treat it as a work screen.
Where is the Core Tech 15.6-Inch Dual-Screen Laptop Monitor Extender cheapest?
At Best Buy, for $299.99, as of our latest check.