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Purple open-frame ATX mid-tower with tempered glass side panel and aluminium-magnesium structure

Corn Electronics

Corn Electronics Jonsbo MOD3 Open Frame ATX Mid Tower Purple PC Case

SKU CH-QBWX-3KQDZ

Open-frame ATX mid-tower in purple aluminium-magnesium alloy and tempered glass, supporting E-ATX boards, 400 mm GPUs, 360 mm top radiators and 49 mm rear cable space

  • Max graphics card length400 mm
  • Supported motherboard sizesMicro ATX / ATX / E-ATX
  • 3.5-inch internal bays1
  • 2.5-inch internal bays2
  • Expansion card slots7
  • Fan mounting optionsFront - 3 × 120 mm / Top - 2 × 120 mm / Top - 3 × 120 mm

Color Red

  • Open frame design showcases hardware with unrestricted airflow
  • 49 mm rear cable routing space keeps builds tidy
  • 5 mm plus 2.0 mm aluminium-magnesium alloy frame gives rigid structure
  • Top radiator support up to 360 mm enables high-capacity liquid cooling
  • 400 mm GPU clearance fits full-length graphics cards

Purpose and audience

The Jonsbo MOD3 is an open-frame ATX mid-tower finished in purple. It targets builders who want unrestricted airflow and full visibility of high-end components without enclosure panels restricting radiator or graphics-card length.

Cooling and expansion limits

The chassis accepts front mounts for three 120 mm fans and top mounts for either two or three 120 mm fans. A top radiator up to 360 mm is supported, while the CPU cooler height limit is 170 mm and the graphics-card length limit is 400 mm.

Build quality and daily implications

The structure uses 2.5 mm and 2.0 mm aluminium-magnesium alloy with a 4.0 mm tempered-glass side panel. A 49 mm cable-management channel behind the motherboard tray keeps routing tidy, and the front panel includes 5 V ARGB mecha lighting. Dust filters are fitted, and the case provides one 3.5-inch bay plus two 2.5-inch bays with seven expansion slots.

How it compares

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

Price $462.99
Pricier than about 88% of the 1,468 comparable items (median $100.99).
Max graphics card length 400 mm
Typical for this category: the median of 894 items is 400 mm.

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Specifications

Product
Brand nameJonsbo
Product lineMOD3
Product typeATX Mid Tower
Product colorPurple
Storage
3.5-inch internal bays1
2.5-inch internal bays2
Ports & slots
Expansion card slots7
Power
Power supply includedNo
Size & build
Max graphics card length400 mm
Dust filteringYes
Fan mounting optionsFront - 3 × 120 mm / Top - 2 × 120 mm / Top - 3 × 120 mm
Compatibility
Supported motherboard sizesMicro ATX / ATX / E-ATX
Radiator supportTop - Up to 360 mm
CPU cooler height limit170 mm
PSU length limit195 mm

Other versions of this model

3 more in the same range

Questions about this item

Which version of the Jonsbo MOD3 open frame case should I choose if I need E-ATX motherboard support?

The single purple MOD3 model listed supports Micro ATX, ATX and E-ATX boards, so no separate version is required.

What does the 400 mm maximum GPU length mean once the case is built?

It allows graphics cards up to 400 mm long to fit without hitting the front panel or radiator mounts.

What radiator size does the top mounting area cap at in practice?

The top supports radiators up to 360 mm, limiting liquid-cooling loops to that length.

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