SilverStone launches CS240 NAS case with four 2.5-inch U.2 drive bays

SilverStone has listed the CS240, a compact 21.65-liter Mini-ITX NAS case first showcased at Computex 2026. Built around four hot-swappable 2.5-inch U.2 drive bays, the enclosure supports high-speed storage configurations alongside full-sized hardware compatibility.

According to TechPowerUP, the case is mostly made of steel with an aluminium front door and a plastic front panel. The CS240 measures 211x285x360mm and features four external hot-swap bays operate in tri-mode, supporting NVMe U.2 (SFF-8639), SAS, and SATA drives up to 15mm thick. These bays connect via a backplane using dual SlimSAS 8i (SFF-8654) connectors, running PCIe 4.0 x4. Inside, an extra drive bay accommodates either one 3.5-inch drive or two 2.5-inch drives. Moreover, the case has 2x expansion slots.

Motherboard support includes Deep Mini-ITX and Mini-DTX form factors. As for graphics cards, there's space for one up to 300mm in length and 168mm in width, with an integrated support bracket to help it fit. CPU cooler clearance reaches 182mm tall, while power supply support covers SFX and SFX-L units up to 140mm long.

Three 120mm fans come pre-installed (one at the rear and two on the side), with the side panel also accommodating three 80mm fans instead. Liquid cooling builders can fit a single 120mm radiator at the back. Front panel I/O includes one USB-C port, two USB-A 3.0 ports, and a combo audio jack. While official pricing remains unannounced, Alternate lists the chassis for €349.

KitGuru says: Are you considering building your own NAS? How much would you be willing to spend on the chassis for it? 

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