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Black micro ATX mini tower with tempered glass side panel and top carry handle

Rosewill

Rosewill FBM-Z3-400 Micro ATX Mini Tower PC Case with 400W PSU

SKU CH-9G2Q-HE3YM MPN FBM-Z3-400

A compact Micro ATX mini tower with a pre-installed 400W PSU, tempered glass side panel, top carry handle and a rear 120mm PWM fan included

  • Max graphics card length340 mm
  • Housing materialSteel / Plastic / Tempered Glass
  • Power supply included400 W
  • Power supply mountingBottom
  • Supported motherboard sizesMicro ATX / Mini ITX
  • Side panel typeTempered Glass Panel

Model FBM-Z3 · 400W PSU

  • Tempered glass panel showcases your build clearly
  • Pre-installed 400W PSU powers the system without extra purchase
  • Top carry handle makes transport simple and secure
  • Dual USB 3.0 front ports give fast peripheral access
  • 240mm top radiator support enables liquid cooling in a compact frame

Compact Micro ATX Case with Integrated 400W PSU

The Rosewill FBM-Z3-400 is a Micro ATX mini tower that fits Micro ATX and Mini ITX motherboards. A pre-installed 400W power supply sits at the bottom, so builders can start a portable system without sourcing a separate unit. A tempered glass side panel shows the interior, while a top carry handle makes transport simple for LAN events or compact workstations.

Thermals Noise and Power Draw in Normal Use

A single rear 120mm PWM fan ships installed, providing baseline airflow through the steel and plastic chassis. Front and side mesh panels draw cool air across the motherboard tray, while dust filters on the intake paths reduce buildup on components. The included 400W supply delivers stable power for typical office or home-theatre workloads without demanding extra cables or an external brick.

Behaviour Under Sustained Load

The top panel supports radiators up to 240mm and can also hold two 140mm or two 120mm fans for heavier cooling loops. Bottom mounts accept two additional 120mm fans to feed graphics cards up to 340mm long, while the CPU cooler clearance reaches 160mm for tower-style heatsinks. Four expansion slots give room for full-height add-in cards, and the PSU bay accommodates units up to 150mm deep if an upgrade is needed.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $56.99
Cheaper than about 84% of the 1,468 comparable items (median $100.99).
Max graphics card length 340 mm
Lower than about 80% of the 894 comparable items (median 400 mm).

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Specifications

Product
Brand nameRosewill
Model nameFBM-Z3-400
Product typeMicro ATX
Product colorBlack
Storage
3.5-inch internal bays1
2.5-inch internal bays2
Ports & slots
Expansion card slots4
Front panel ports2 x USB 3.0 / Audio
Power
Power supply included400 W
Size & build
Max graphics card length340 mm
Housing materialSteel / Plastic / Tempered Glass
Power supply mountingBottom
Side panel typeTempered Glass Panel
Dust filteringYes
Fan mounting optionsBottom - 2 × 120 mm / Rear - 1 × 120 mm / Top - 2 × 120 mm / Top - 2 × 140 mm
Shipping weight6.26 kg
Package size432 × 381 × 287 mm
Compatibility
Supported motherboard sizesMicro ATX / Mini ITX
Radiator supportTop - Up to 240 mm
CPU cooler height limit160 mm
PSU length limit140 mm
More details
Included fansRear - 1 × 120 mm

Other versions of this model

5 more in the same range

Questions about this item

How do I install the pre-installed 400W power supply and what step do people get wrong?

The 400W unit is already mounted at the bottom. The common mistake is forgetting to plug the 24-pin ATX and CPU power cables into the motherboard before closing the tempered glass side panel.

What maintenance or replacement will the pre-installed 120mm PWM fan need later?

The rear 120mm PWM fan may collect dust on its blades. Clean it with compressed air every few months; if bearing noise appears, replace it with any standard 120mm PWM fan.

What limit shows up first when running a 240mm top radiator under sustained load?

The top panel supports radiators up to 240mm. Under sustained load the 160mm CPU cooler height limit and the single rear exhaust fan become the airflow bottleneck before the radiator itself.

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