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Black aluminium steel glass mid tower with mesh panels and ARGB front strip

Lian Li

Lian Li O11DEX Black ATX Mid Tower PC Case

SKU CH-VC32-89XHQ MPN O11DEX

ATX mid-tower case with reversible layout, top and side mesh panels, and support for up to nine SSDs or six HDDs plus three SSDs

  • Max graphics card length426 mm
  • Housing materialAluminum / Steel / Tempered Glass
  • Supported motherboard sizesMicro ATX / ATX / ITX / E-ATX
  • Side panel typeWith Side Window
  • LED lightingARGB
  • Dust filteringBottom
  • Supports up to nine SSDs or six HDDs plus three SSDs for ample storage
  • Reversible layout lets you show the main chamber on either side for flexible builds
  • Top and side mesh panels deliver optimised airflow for effective cooling
  • Front I/O includes USB 3.0, USB 3.1 Type-C and audio for convenient connectivity
  • Pin mounting mechanism allows quick side-panel removal without taking off the top panel

Reversible Mid-Tower Chassis

The Lian Li O11DEX is an ATX mid-tower built from aluminum, steel and tempered glass. It supports Micro-ATX, ATX, ITX and E-ATX motherboards. The reversible layout lets you place the main chamber on the left or right side. ARGB lighting on the front panel is controlled by a button, L-Connect software or motherboard sync.

Flexible Cooling And Storage Layout

Top, side and bottom positions each accept three 120 mm or two 140 mm fans. Radiator support reaches 360 mm on top and side with a combined thickness limit of 87.5 mm on top and 83 mm or 63 mm inside depending on fan size. A 60 mm fan can mount on the drive cage. Nine 2.5-inch SSD pads are included across the drive cage, cable bar and side brackets, plus room for six 3.5-inch drives.

Upgrade From Fixed-Layout Cases

The pin-mount side panels open without removing the top panel and the hook-style cable bar handles bulky cables with Velcro straps. Swappable fan and radiator brackets simplify custom loops. If your current case limits radiator thickness, GPU length to 426 mm or CPU cooler height to 167 mm, this chassis removes those constraints.

How it compares

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

Price $122.99
Pricier than about 61% of the 1,468 comparable items (median $100.99).
Max graphics card length 426 mm
Higher than about 82% of the 894 comparable items (median 400 mm).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLIAN LI
Product lineO11 Dynamic EVO
Model nameO11DEX
Product typeATX Mid Tower
Product colorBlack
Storage
3.5-inch internal baysBottom: 3.5 in HDD x 2 or 2.5 in SSD x 4
Side: 3.5 in HDD x 2 or 2.5 in SSD x 4
Drive Cage: 3.5 in HDD x 2 or 2.5 in SSD x 3
2.5-inch internal baysDrive Cage: 2.5 in SSD x 1
Cable Management Bar: 2.5 in SSD x 2
* Only 9 sets of 2.5 in SSD mounting pads are provided.
Ports & slots
Expansion card slots8
Front panel ports2 x USB 3.0 / 1 x USB 3.1 Type-C / Audio
Power
Power supply includedNo
Size & build
Max graphics card length426 mm
Housing materialAluminum / Steel / Tempered Glass
Side panel typeWith Side Window
Dust filteringBottom
Fan mounting optionsTop: 3 × 120 mm / 2 × 140 mm fan
Side: 3 × 120 mm / 2 × 140 mm fan
Bottom: 3 × 120 mm / 2 × 140 mm fan
Rear: 1 × 120 mm fan
On Drive Cage: 1 × 60 mm fan
Product dimensions18.07 in × 11.22 in × 18.31 in
Shipping weight15.92 kg
Package size699 × 572 × 381 mm
Compatibility
Supported motherboard sizesMicro ATX / ATX / ITX / E-ATX
CPU cooler height limit167 mm
PSU length limit220 mm
More details
LED lightingARGB

Questions about this item

How long a graphics card fits before it hits the drive cage?

The case accepts cards up to 426 mm so most triple-slot models clear the side-mounted drive cage without modification.

What happens to thermals and noise when the mesh panels run fans at load all day?

Top, side and bottom mounts each take three 120 mm or two 140 mm fans, while the rear adds one 120 mm and the drive cage a 60 mm unit, giving high airflow with room to run fans at lower RPM for quieter operation.

Which motherboard power and front-panel connectors must my build already provide?

You need a board with a 24-pin ATX and 8-pin EPS supply, plus headers for two USB 3.0, one USB 3.1 Type-C and HD audio to use the front I/O panel.

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