Overview
Engineered around high-density mass storage within a standard mid-tower envelope, this chassis accommodates eleven dedicated 3.5-inch hard drive bays alongside dual 2.5-inch mounts. Architectural versatility extends to the mainboard tray, which accepts motherboards ranging from Mini ITX up to E-ATX, while integrating cutouts for modern BTF back-connect designs to streamline power routing away from primary drive cages. Front-panel connectivity is anchored by a USB 3.2 Type-C port, a USB 3.0 port, and analog audio jacks.
Thermal management relies on a high-flow front mesh intake supplied directly by four pre-installed 140mm PWM fans, driving targeted airflow across the drive array and central expansion area. Structural fabrication combines a rigid steel frame with plastic front accents and a tempered glass side panel, protected across primary air paths by integrated dust filtration. Internal clearances accommodate liquid cooling radiators up to 360mm, graphics cards up to 420mm in length, and air coolers up to 180mm in height, allowing builder flexibility from compact storage servers to fully loaded workstation NAS hybrids.
Technical Specifications
| Brand | Rosewill |
| Model | Helium NAS Max |
| Form Factor | ATX Mid Tower |
| Chassis Materials | Steel, Plastic, Tempered Glass |
| Motherboard Support | E-ATX, ATX, Micro ATX, Mini ITX, BTF Back-Connect |
| Internal 3.5 Inch Bays | 11 |
| Internal 2.5 Inch Bays | 2 |
| Expansion Slots | 7 |
| Pre Installed Fans | 4 x 140mm PWM |
| Front Fan Mounts | 3 x 120mm / 3 x 140mm |
| Top Fan Mounts | 2 x 140mm |
| Rear Fan Mounts | 1 x 120mm / 1 x 140mm |
| Radiator Clearance | Up to 360mm |
| Maximum GPU Length | 420 mm |
| Maximum CPU Cooler Height | 180 mm |
| Front Panel I/O | 1 x USB 3.2 Type-C, 1 x USB 3.0, Audio |
| Dust Filters | Yes |
- Massive storage expansion supporting up to 11 x 3.5-inch HDDs and 2 x 2.5-inch SSDs
- Turnkey cooling setup with four pre-installed 140mm PWM fans and front mesh ventilation
- Broad hardware compatibility including BTF back-connect motherboards and up to 420mm GPU clearance
- Modern front I/O featuring a dedicated USB 3.2 Type-C port
- Tempered glass side panel favors desktop aesthetics over acoustic dampening panels standard in server closets
- Fully populating eleven mechanical hard drives substantially increases chassis weight and cable congestion
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At a Glance
How reliable is the Rosewill Helium NAS Max according to Mizex audits?
An outstanding foundation for high-capacity DIY home servers and storage arrays that require exceptional 3.5-inch mechanical drive density and BTF motherboard support without moving to enterprise rackmount hardware.
What are the known quirks or drawbacks of the Rosewill Helium NAS Max?
Our reliability audit identified the following documented caveats:
- Tempered glass side panel favors desktop aesthetics over acoustic dampening panels standard in server closets
- Fully populating eleven mechanical hard drives substantially increases chassis weight and cable congestion
What are the key engineering highlights of the Rosewill Helium NAS Max?
The top strengths recorded in our evaluation include:
- Massive storage expansion supporting up to 11 x 3.5-inch HDDs and 2 x 2.5-inch SSDs
- Turnkey cooling setup with four pre-installed 140mm PWM fans and front mesh ventilation
- Broad hardware compatibility including BTF back-connect motherboards and up to 420mm GPU clearance
- Modern front I/O featuring a dedicated USB 3.2 Type-C port