I tried Lenovo's modular ThinkBook laptop, and it's a concept I'd actually root for

Source: ZDNet

ZDNET’s key takeaways

• Lenovo unveiled a modular proof‑of‑concept ThinkBook at Mobile World Congress 2026.
• It features a detachable dual screen and keyboard, and swappable ports.
• While still in development, the device feels close to a finished product.

Lenovo has been flexing some serious conceptual muscle with its proof‑of‑concept PCs. Last year, I tested the ThinkBook Plus Gen 6 rollable and found its 17‑inch rollable screen surprisingly practical—if not perfectly polished.

Over the past few years, Lenovo has been inching toward a truly modular laptop (see what was announced at CES 2026). This model may be the most serious commitment yet: a mainstream 14‑inch laptop that feels surprisingly close to a complete product, even though some kinks remain.

Detach and swap

By default, the laptop’s second display lives on the back of the main display, but it can be snapped off to replace the keyboard or stand propped up next to the laptop as a standalone portable monitor.

If used as an external monitor, a built‑in kickstand on the back allows it to be propped up in either landscape or portrait mode. Keep in mind it must stay connected via a USB‑C cable to the laptop.

Also: Lenovo’s new PCs offer a glimpse of the future – and it’s modular

In my hands‑on with the kickstand, I found it a little awkward and hard to maneuver—one of the weaker physical elements of the design, but likely easy for engineers to improve.

The keyboard/trackpad is also fully detachable and can be positioned anywhere, using Bluetooth to stay connected. It’s similar to the design seen on the ZenBook Duo—easy to use but a bit awkward to free‑form on a desk. A snap‑to mechanism that attached it to the bottom of the laptop would be welcome.

Modular I/O

Although the swappable displays and keyboard are cool, the most interesting feature is the swappable ports, which bring a level of modularity not yet seen on Lenovo’s mainstream laptop line. Only Framework laptops (e.g., the 16‑inch model) have this kind of swap‑and‑go I/O, making it notable in a ThinkBook.

Framework’s ports are plastic modules that connect via integrated USB‑C connections. The ThinkBook’s I/O modules are different and currently limited to USB‑C, USB‑A, and HDMI.

Also: I tried Lenovo’s $3,000 rollable ThinkBook and can’t go back to regular‑sized laptops

Being able to pop out a port and swap sides—e.g., moving HDMI to the right or the charger to the left—is infinitely convenient and points toward a more flexible device concept.

The ThinkBook Modular AI PC is a big step in an exciting direction. Although it’s a conceptual device with no release date, it feels like Lenovo is onto something. After all, it’s essentially a ThinkBook chassis with specialized adjustments for the form factor.

Lenovo also signaled its commitment to modularity and repairability with the ThinkPad X1 Carbon Gen 14 Aura Edition announced at CES. That laptop featured a redesigned, double‑sided motherboard to improve access and part replacement for end users—on a flagship lineup no less.

Following up with that, I’m hopeful Lenovo will continue iterating on these ideas and bring them to mainstream laptops like ThinkPads and Yogas. There’s certainly consumer interest.