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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

  • TypeMicro ATX
  • ColorBlack
  • Case MaterialSteel / Plastic / Tempered Glass
  • With Power Supply400W
  • Power Supply MountedBottom
  • Motherboard CompatibilityMicro ATX / Mini ITX

Options FBM-Z3 | 400W PSU

Struck-through versions exist but are not stocked here.

  • 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.

Highlights

  • 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

Specifications

BrandRosewill
ModelFBM-Z3-400
TypeMicro ATX
ColorBlack
Case MaterialSteel / Plastic / Tempered Glass
With Power Supply400W
Power Supply MountedBottom
Motherboard CompatibilityMicro ATX / Mini ITX
Side PanelTempered Glass Panel
Dust FiltersYes
Internal 3.5" Drive Bays1
Internal 2.5" Drive Bays2
Expansion Slots4
Front Ports2 x USB 3.0 / Audio
Fan OptionsBottom - 2 x 120mm / Rear - 1 x 120mm / Top - 2 x 120mm / Top - 2 x 140mm
Pre-installed FansRear - 1 x 120mm
Radiator OptionsTop - Up to 240mm
Max GPU Length340 mm
Max CPU Cooler Height160 mm
Max PSU Length140 mm
Shipping weight6.26 kg
Package size432 × 381 × 287 mm

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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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