We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver micro-ATX aluminium case with tempered glass side panel and built-in 140 mm front and 120 mm rear fans

Corn Electronics

Corn Electronics UMX3 Micro-ATX Aluminium Tempered Glass PC Case Silver

SKU CH-YPQV-V8PSW MPN UMX3

Micro-ATX aluminium chassis with built-in 140 mm and 120 mm fans, 320 mm GPU clearance and 163 mm CPU cooler height

  • TypeMicro ATX / Mini-ITX
  • ColorSilver
  • With Power SupplyNo
  • Power Supply MountedTop
  • Motherboard CompatibilityMicro ATX / ITX
  • Side Panelwith Side Window
  • Premium aluminium-magnesium shell gives a rigid, lightweight chassis
  • Built-in 140 mm front and 120 mm rear fans plus radiator mounts deliver strong airflow
  • Fits graphics cards up to 320 mm and CPU coolers up to 163 mm for high-end builds
  • Tool-less glass side panel and front USB 3.0 ports make access and connectivity simple
  • Compact 188 × 358 × 365 mm footprint suits Micro-ATX and Mini-ITX motherboards

Compact aluminium chassis for Micro-ATX builds

The UMX3 is a silver Micro-ATX and Mini-ITX case built from 2.0mm aluminium magnesium alloy with a 1.0+1.2 mm SGCC steel internal structure. A full tempered glass side window shows the interior. It fits graphics cards up to 320mm long and CPU coolers up to 163mm tall.

Builders who need dense storage

This case suits users wanting a premium small-form-factor enclosure with strong cooling potential. It is not for builders who need more than four 2.5-inch drives or a single 3.5-inch bay. It is not for systems requiring a power supply longer than 160mm.

320 mm maximum graphics card length

The 320mm GPU clearance is the critical dimension that decides if your card fits. Measure your graphics card before purchase; longer models will not install in this chassis.

Highlights

  • Premium aluminium-magnesium shell gives a rigid, lightweight chassis
  • Built-in 140 mm front and 120 mm rear fans plus radiator mounts deliver strong airflow
  • Fits graphics cards up to 320 mm and CPU coolers up to 163 mm for high-end builds
  • Tool-less glass side panel and front USB 3.0 ports make access and connectivity simple
  • Compact 188 × 358 × 365 mm footprint suits Micro-ATX and Mini-ITX motherboards

Specifications

BrandJonsbo
ModelUMX3-PLUS(Window version)
TypeMicro ATX / Mini-ITX
ColorSilver
With Power SupplyNo
Power Supply MountedTop
Motherboard CompatibilityMicro ATX / ITX
Side Panelwith Side Window
External 5.25" Drive Bays1 × 3.5", 3 × 2.5" Or 4 × 2.5"
Expansion Slots4
Front PortsUSB 3.0×2,USB 2.0×2,Audio×1,MIC×1
Fan Options1×140 mm fan (built-in)(140mm radiator can be installed ); Back:1×120 mm fan (built-in) (120mm radiator can be installed )
Max GPU Length320mm
Max CPU Cooler Height163mm
Max PSU LengthPSII (Modular or non-modular PSU which is shorter than 160mm)

Questions about this item

Does the case come with a power supply or do I need to buy one separately?

No power supply is included; you must buy a PSII unit shorter than 160 mm, modular or non-modular

How do I choose between the 3.5-inch and 2.5-inch drive layouts?

The bay holds either one 3.5-inch drive plus three 2.5-inch drives, or four 2.5-inch drives — pick the 3.5-inch combo if you need a large mechanical disk, otherwise the all-2.5-inch layout gives more SSD slots

Will a 320 mm graphics card and a 163 mm CPU cooler fit together in this build?

Yes, the chassis allows up to 320 mm GPU length and 163 mm cooler height simultaneously, so most full-size dual-slot cards and top air coolers clear each other

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.