Mouse Computer has officially introduced the Mouse X2, a compact 12.2-inch ultraportable laptop engineered for mobile professionals who refuse to sacrifice legacy connectivity or physical repairability. Weighing just 981 grams (2.16 pounds), the Mouse X2 packs AMD's latest Ryzen AI APU architecture into a chassis under two centimeters thick, with starting prices around $1,545 (¥239,800) in Japan.
Unlike many modern sub-kilogram laptops that eliminate physical ports and solder memory permanently to the motherboard, the Mouse X2 breaks conventional design trends. It retains an open SODIMM RAM slot for hardware upgrades, an RJ45 Ethernet port for stable wired networking, and full-sized USB Type-A connectivity alongside a generous 60 Wh battery.
Zen 5 Architecture in a Featherweight Chassis
At the center of the Mouse X2 is AMD's updated processor lineup, offered in multiple configurations to fit different productivity demands. The entry-level variant utilizes a Ryzen 5 216 chip, featuring a six-core combination of two Zen 4 cores and four dense Zen 4c cores, delivering performance comparable to the previous generation Ryzen 5 8540U.
For users needing heavier multi-tasking headroom, Mouse Computer offers two 'Krackan Point' Zen 5 options: the Ryzen AI 5 340 and the flagship Ryzen AI 7 350. The Ryzen AI 5 340 combines three full Zen 5 cores with three Zen 5c cores, delivering multi-threaded performance on par with Intel's Core Ultra 7 165H. Stepping up to the Ryzen AI 7 350 unlocks an 8-core, 16-thread arrangement (four Zen 5 and four Zen 5c cores) that approaches the multi-core processing power of Intel's Core Ultra 9 185H while maintaining strict thermal control inside the compact enclosure.
Unexpected Expandability and Desktop-Grade Connectivity
Where most sub-1kg notebooks enforce strict compromises, the Mouse X2 stands out with its practical hardware layout. The laptop ships in a single-channel 16 GB DDR5 configuration, but includes an unoccupied SODIMM slot. This allows owners to easily purchase an off-the-shelf 16 GB DDR5 module (typically around $220 to $230) and expand the system to 32 GB dual-channel RAM without replacing the original stick.
Visual duties are handled by a 12.2-inch 1200p (1920 x 1200) display featuring a 16:10 aspect ratio and 100% sRGB color gamut coverage. A flexible 180-degree hinge allows the screen to lay completely flat for collaborative desk work. Despite its 27.7 x 21 x 1.9 cm footprint, the frame manages to house a full-sized HDMI output, USB Type-A ports, a microSD card reader, Gigabit LAN, Wi-Fi 7, Bluetooth 5, and a 2 MP webcam equipped with Windows Hello facial recognition.
Pricing, Regional Availability, and Import Options
The Mouse X2 is currently available through Mouse Computer's official online store in Japan. The Ryzen AI 5 340 configuration with 16 GB RAM and a 500 GB NVMe M.2 SSD retails for approximately $1,545 (¥239,800). The higher-tier Ryzen AI 7 350 model with identical storage and memory configuration carries a price tag of roughly $1,670 (¥259,000).
While Mouse Computer primarily targets its home market in Japan and has not announced official global distribution, international buyers looking for a portable machine with physical Ethernet and user-expandable memory can acquire the laptop through specialized Japanese import services. Overseas buyers should keep in mind potential warranty limitations and regional Japanese keyboard layouts when considering the import path.
