There are concept laptops, and then there are concept laptops. This is the italicized kind.
Lenovo is the undisputed king of the rolling, folding, or spinning “Why not, let’s try it!” laptop design, and among the retail-ready products and concept prototypes that it announced at MWC 2026, the ThinkBook Modular AI PC Concept caught my interest the most. This design combines several radical laptop ideas I’ve already seen—dual displays, removable keyboards, screens on the lid’s back side—into one device, and it’s somehow all seamless. The ThinkBook Modular AI PC looks like a traditional laptop at first glance, but a second, removable screen fastens onto the lid. You can swap that screen onto the keyboard deck (in place of the keyboard, which can then be used wirelessly), or use it alongside the laptop as a portable monitor, attached via an included cable.
I was able to go hands on with this device (and others) at a private meeting before Lenovo’s big reveal in Barcelona. While Lenovo is still working on this device, and it’s very much in the concept phase, it feels like one of its best-thought-out prototypes, one likely to make it to store shelves at some point. Here’s hoping.
Design: A Swappable Second Screen
This ThinkBook concept is a 14-inch laptop with a thin chassis, prioritizing portability. That’s a natural fit for the idea, given that the laptop’s second screen is intended to enable extra productivity when you are away from a stationary monitor.
(Credit: Joseph Maldonado)
Here’s how it works. The main screen is always fixed in its usual clamshell-laptop position, but the secondary, rear screen is removable. It attaches magnetically to the lid, facing outward, and pulls free easily. This panel is incredibly thin and light—so much so that it feels like a mockup or a rectangle of thick cardboard in the hand. But it is fully functional.
(Credit: Joseph Maldonado)
(Credit: Joseph Maldonado)
With the second screen in hand, you have a couple of options. The first is removing the keyboard and placing the screen where the keys usually sit, giving you a second screen under the main display. The keyboard works wirelessly, so you can continue using it (and the touchpad) even when it is separated from the laptop.
(Credit: Joseph Maldonado)
This setup mimics the functionality of the Asus ZenBook Duo or one of Lenovo’s Yoga Books: You can use the displays as a single tall screen or as two distinct displays to enhance your workflow. With the keyboard deployed wirelessly, you’re not losing any productivity, but doubling the screen space in front of you. How you’d use an arrangement like this will vary widely according to what you do for work or entertainment. Still, as with the ZenBook Duo and other dual-screen devices, you’ll likely find many creative ways to take advantage of this layout.
(Credit: Joseph Maldonado)
More About the Panel: A Built-In Portable Desk Monitor
The other screen-positioning option is to prop up the second panel, connect it to the laptop with a cable, and use it as a portable monitor alongside the laptop on your desk. On the display side, it attaches easily via Lenovo’s magnetic pogo-pin-based Magic Bay interface, and then with a standard USB-C connection into the laptop.
(Credit: Joseph Maldonado)
One of the less elegant aspects of this product is the stand Lenovo designed to keep the second screen propped up. A thin, removable bar runs between the rear feet on the laptop’s underside. You can twist and remove it from this location, and its magnetic base will stick to the back side of the second screen to act as a stand.
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(Credit: Joseph Maldonado)
(Credit: Joseph Maldonado)
You can stand the panel in either landscape or portrait mode by attaching the bar to specific spots on the back of the screen, but this is the central opportunity for improvement for this concept. The exact spots where the kickstand attaches are only lightly marked for now—Lenovo representatives had to point them out to me a few times—and the bar is flimsy.
(Credit: Joseph Maldonado)
If you attach the kickstand in just the right spot and prop it up, it stays in place, but trying to move or slide the screen can easily pop the stand off, causing the display to fall flat. It’s just a prototype, but this is one area where Lenovo can focus more effort.
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Living Up to the Modular Name: Removable Ports, Too
This concept device has one more trick that delivers on the “modular” name: swappable ports. Much in the style of Framework’s removable expansion “cards” (its name for its signature port modules), this ThinkBook concept features empty port bays and small tiles to plug into them. Each tile has an outward-facing port. If, for example, you suddenly need an HDMI connection, or would rather have your USB Type-A port on the left side instead of the right, you can pull the port tiles free and insert each into a different bay. The available types include USB Type-A, USB Type-C, and HDMI.
(Credit: Joseph Maldonado)
While Framework certainly gets the credit for popularizing this idea, I can’t complain about it spreading to more systems. (The implementation here is even similar.) Lenovo iterated on the idea as well, designing a carrying case for these port modules. It looks like a wireless earbuds case, and while it holds only a couple of modules, it’s better than throwing them loose in a bag.
(Credit: Joseph Maldonado)
The Takeaway: Moments From Coming Out of the Oven
Overall, while this is still a concept design and not currently set for full release, this ThinkBook feels close to a real product. Lenovo has some room to refine the process of removing the rear display and keyboard, and I hope Lenovo works on that kickstand. I also have some concerns about the second display facing outward and unprotected when it’s on the lid. (You’d have to be very careful in transit, but a sleeve or something similar seems like an easy solution.) The “AI” in the product name also seems more like a garnish than anything, more to do with whatever processor would feature in an eventual retail version. All of the chipmakers’ top current mobile chips are AI-capable.
(Credit: Joseph Maldonado)
Despite those concerns, Lenovo’s execution and the idea itself make a clear case for this concept becoming a reality. That’s something you can’t say for every prototype, and I was far less sold on Lenovo’s Legion Go Fold, also shown for the first time at MWC. Combining a two-screen laptop, a wireless keyboard, a portable monitor, and swappable ports into one slick mobile laptop is no mean feat, and Lenovo accomplished it elegantly here.
I suspect we will, eventually, see a version of the ThinkBook Modular AI PC come to market. At least it should: Lenovo is really onto something with this one.
About Our Expert
Matthew Buzzi
Principal Writer, Hardware
Experience
I’ve been a consumer PC expert at PCMag for 10 years, and I love PC gaming. I’ve played games on my computer for as long as I can remember, which eventually (as it does for many) led me to build and upgrade my own desktops to this day. Through my years at PCMag, I’ve tested and reviewed many, many dozens of laptops and desktops, and I am always happy to recommend a PC for your needs and budget.
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