Black / 2x USB 3.0

The midi tower Enermax Thorex is designed for entry-level gaming PCs. The tinted acrylic side window reveals eye-catching hardware inside the chassis. And the large mesh front with integrated dust filter improves the fresh air supply and air circulation in order to keep the system temperatures low. One 12cm rear fan with 3P connector is included ex works. The cooling system can be upgraded with three additional 12cm fans at the top (1x) and at the front (2x).

Thorex accommodates two 5.25” optical disk drives, three 3.5” hard disks and four 2.5” HDDs or SSDs. The side bracket of the upper 2.5” cage can be removed, so that you have the possibility to integrate longer graphics cards (max. 390mm length) and improve the fresh air supply from the front. Then, one 2.5” HDD/SSD can be moved to the bottom of the case.

Enermax equips the Thorex with extruded side panels, so that you have more room for a comfortable hidden cable management behind the mainboard tray and for strong tower CPU coolers with max. 165mm height. The midi tower supports ATX and micro-ATX (mATX/µATX) mainboards.

Related Products



  • Thorex – Irresistible Gaming Midi Tower
    Compact Midi Tower with aggressive front panel for small gaming systems. Big mesh area for best possible air circulation.
  • Tinted Acrylic Window
    To attract envious eyes on high-end hardware and stylish systems.


  • Comfortable Cooling System
    One 12cm rear fan included. Upgradable with three fans optionally: two 12cm front fans and one 12cm top fan.
  • Excellent Passive Cooling
    Wide, air-permeable mesh front for optimal air circulation and an efficient fresh air supply. Integrated filter to protect the system from dust.


  • Multi-GPU Support
    Six extension card slots allow for the installation of two or maximum three graphics cards.
  • Removable upper 2.5” HDD/SSD cage clears the space for longer high-end graphics cards with up to 390mm length.
  • Supported Mainboard Sizes
    The Thorex supports ATX and micro-ATX (mATX/µATX) mainboards. Pre-assembled mainboard spacers for easy installation.

Data Storage Management & Interfaces

  • SSD ready!
    Three 2.5” trays inside the upper HDD/SSD cage. One 2.5” HDD/SSD can be installed in the bottom of the case inside the 3.5” HDD cage.
  • Ultra High-speed Data Transfer
    Two USB 3.0 interfaces on the front panel for a lightning-fast data transfer with up to 5 Gb/sec.
  • Easy Accessible Front Interfaces
    2x USB 3.0 and audio I/O

Installation, Cable Routing & Operation

  • Extruded Side Panels
    More space for high tower CPU coolers and for a comfortable hidden cable routing behind the mainboard tray due to extruded side panel.
  • Optimal Dust Protection
    Anti-dust filter behind die front panel and at the bottom of the case.
  • Easy and User-friendly System Installation
    Thumb screws for side panels, cut-out for comfortable CPU cooler mounting and pre-assembled mainboard spacers.
  • Bottom-Mounted PSU
    Comfortable cable routing and optimized cooling performance thanks to bottom-mounted power supply. With anti-vibration rubber pads and cleanable dust filter at the bottom of the case.

Technical Details

Model ECA3321A-BT(2U3)
Type ATX Midi Tower
Colour Black
Interior Colour
Dimensions (mm) D 453 x W 203 x  H 440
Drive Bays 5,25" 2x
Drive Bays 3,5"
Drive Bays 2,5"
I/O in front 2x USB 3.0, HD Audio
Air Cooling - Front optional: 2x 12cm fan
Air Cooling - Top
optional: 1x 12cm fan
Air Cooling - Rear
pre-installed: 1x 12cm fan
Max. Length Graphics Cards
280-390mm (depending on position)
Max. CPU Cooler Height
Extension card slots

Dealer Information

EAN Code
Carton - Net Weight
Carton - Gross Weight
Carton - Dimensions (mm)
D 489 x W 227 x H 499





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