Quantum Mesh Launches All-in-One Immersion Cooling Rack 'KAMUI γ' – Industry's First Integrated Solution for High-Density GPU Micro Data Centers

Quantum Mesh Inc. (Headquarters: Chuo-ku, Tokyo; Representative Director: Hiroyuki Shinohara; hereinafter "Quantum Mesh") is pleased to announce the launch of "KAMUI γ (Kamuy Gamma)", a new model in its proprietary immersion cooling rack "KAMUI" series. This product is an integrated model that incorporates the chiller necessary for cooling into the main unit, and is envisioned for use as a micro data center that completes the computing infrastructure in an installation area of less than 1 square meter. The development and provision of an integrated immersion cooling rack with a built-in chiller is the industry's first, both domestically and internationally (according to our research).

Furthermore, the actual unit of "KAMUI γ" will be unveiled for the first time at the "Data Center EXPO [Spring]" (within Japan IT Week) to be held at Tokyo Big Sight from Wednesday, April 8 to Friday, April 10, 2026.

## Background of New Model "KAMUI γ" Development
With the widespread adoption of generative AI and high-performance computing (HPC), increasing power consumption and heat generation in data centers have become major challenges. While conventional air-cooling methods have reached their limits in terms of density, interest in immersion cooling as a more efficient cooling technology is growing. Furthermore, with the real-time processing of AI and the increase in data volume, the importance of distributed infrastructure that balances low-latency processing and power efficiency is increasing, and the demand for micro data centers is expanding. On the other hand, many immersion cooling systems require external chillers and cooling equipment, and restrictions on installation location and infrastructure conditions have been a hurdle to adoption. To address these challenges, Quantum Mesh developed "KAMUI γ" as a more flexible immersion cooling solution, aiming to realize micro data centers that can build high-performance computing environments regardless of location.

## Features of "KAMUI γ"
"KAMUI γ" is the latest model in Quantum Mesh's "KAMUI" series, which began offering Japan's first commercial immersion cooling system in March 2025. It is an all-in-one immersion cooling rack suitable for installation in small data centers, offices, and factories, with cooling equipment integrated into the rack. In addition to heat exchangers and pumps, it also includes a chiller, which is usually installed as external equipment, within the rack, enabling installation and operation independent of external cooling equipment. This allows for the distributed deployment of high-density computing environments, which previously required dedicated facilities, as urban or near-base micro data centers.

* All-in-one design
Requires no external cooling equipment whatsoever, with the chiller, heat exchanger, pump, and PDU all integrated into the rack. It can operate independently anywhere with just a power supply.
* High density and space-saving
8U (immersion) + 2U (air-cooled) configuration, capable of accommodating servers with a maximum depth of 950mm.
* Excellent portability and quietness
Supports replacement from existing air-cooled racks and new construction/expansion of distributed edge DCs.

Through "KAMUI γ", Quantum Mesh will promote the provision of high-density, high-efficiency computing infrastructure required in the AI era, and accelerate the widespread adoption of distributed infrastructure through the deployment of micro data centers.

In addition, at the Data Center EXPO held from April 8, 2026, the actual product will be exhibited, and the possibilities of next-generation infrastructure and micro data centers through immersion cooling will be widely disseminated.

## [Overview of Integrated Immersion Cooling System "KAMUI γ"]