Rosewill
Rosewill Helium NAS Max ATX Mid Tower PC Case
Holds up to eleven 3.5-inch drives and includes four 140 mm PWM fans behind a mesh front panel for high-airflow NAS builds
- TypeATX Mid Tower
- ColorBlack
- Case MaterialSteel / Plastic / Tempered Glass
- Motherboard CompatibilityATX / E-ATX / Micro ATX / Mini ITX
- Dust FiltersYes
- Internal 3.5" Drive Bays11
Model Helium NAS MAX
- Helium NAS
- Helium NAS DUO
- Helium NAS MAX
- Holds eleven 3.5" drives for large-scale NAS storage
- Four 140 mm PWM fans pre-installed for strong airflow
- Mesh front panel and top 360 mm radiator support keep thermals low
- USB 3.2 Type-C front port enables fast external transfers
- Fits E-ATX boards, 410 mm GPU and 185 mm cooler for versatile builds
NAS-Ready Storage Chassis
The Rosewill Helium NAS Max is an ATX mid-tower case built for storage-heavy workloads. It supports up to 11 internal 3.5-inch drives and two 2.5-inch drives, making it suitable for DIY NAS appliances, media servers or small-business file storage. The chassis accepts ATX, E-ATX, Micro-ATX and Mini-ITX motherboards, including BTF-compatible designs. A black steel, plastic and tempered-glass exterior fits home, office or rack-adjacent environments.
Build Flexibility && Clearances
Seven expansion slots give room for add-in cards such as HBA controllers or 10-gigabit networking. The front panel provides one USB 3.2 Type-C port, one USB 3.0 port and audio jacks for quick peripheral access. Graphics cards up to 410 millimetres long are accommodated, while CPU coolers up to 185 millimetres tall fit under the side panel. Power supplies up to 200 millimetres in length are supported. Dust filters are included to protect intake areas.
Airflow, Thermals && Acoustics
A mesh front panel feeds three pre-installed 140-millimetre PWM fans, with a fourth 140-millimetre PWM fan mounted at the rear for exhaust. Additional mounting points allow three 120-millimetre or two 140-millimetre fans on top, plus alternative front and rear sizes. Radiator support reaches 360 millimetres on top and 120 millimetres at the rear for liquid-cooling options. The four included PWM fans balance airflow and noise under typical NAS loads.
Highlights
- Holds eleven 3.5" drives for large-scale NAS storage
- Four 140 mm PWM fans pre-installed for strong airflow
- Mesh front panel and top 360 mm radiator support keep thermals low
- USB 3.2 Type-C front port enables fast external transfers
- Fits E-ATX boards, 410 mm GPU and 185 mm cooler for versatile builds
Specifications
| Brand | Rosewill |
|---|---|
| Model | Helium Nas Max |
| Type | ATX Mid Tower |
| Color | Black |
| Case Material | Steel / Plastic / Tempered Glass |
| Motherboard Compatibility | ATX / E-ATX / Micro ATX / Mini ITX |
| Dust Filters | Yes |
| Internal 3.5" Drive Bays | 11 |
| Internal 2.5" Drive Bays | 2 |
| Expansion Slots | 7 |
| Front Ports | 1 x USB 3.2 Type C / 1 x USB 3.0 / Audio |
| Fan Options | Front - 3 x 120mm / Front - 3 x 140mm / Rear - 1 x 120mm / Rear - 1 x 140mm / Top - 2 x 140mm / Top - 3 x 120mm |
| Pre-installed Fans | Front: 3 x 140mm PWM Fans Included Rear: 1 x 140mm Included |
| Radiator Options | Rear - Up to 120mm / Top - Up to 360mm |
| Max GPU Length | 410 mm |
| Max CPU Cooler Height | 185 mm |
| Max PSU Length | 200 mm |
| Shipping weight | 10.80 kg |
| Package size | 559 × 559 × 318 mm |
Other versions of this model
2 more in the same range
Same family, different memory, cooler or clock — compare before you commit.
Questions about this item
How many 3.5-inch drives can the Helium NAS Max hold before I run out of bays?
The case provides 11 internal 3.5-inch drive bays, so that is the hard limit for mechanical drives.
What are the pre-installed fan sizes and noise behaviour when the system runs continuously?
Four 140 mm PWM fans come fitted — three in front, one at the rear — and will spin up or down based on temperature.
Which motherboard power connector style must I already have for the BTF-ready layout to work?
A BTF-compatible motherboard with its main power and front-panel headers on the rear side is required.
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