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Black ATX mid-tower case with tempered glass side panels and aluminum frame

Lian Li

Lian Li O11DEXL-X ATX Mid Tower PC Case

SKU CH-GR8T-ZZ6B1 MPN O11DEXL-X

ATX mid-tower with aluminium, steel and tempered glass panels, adjustable motherboard tray, reversible frame and support for three 420 mm radiators

  • TypeATX Mid Tower
  • ColorBlack
  • Case MaterialAluminum / Steel / Tempered Glass
  • With Power SupplyNo
  • Motherboard CompatibilityATX / E-ATX / Micro ATX / Mini ITX
  • Side Panel2 x Sides Tempered Glass Panel

Options Black

  • Height-adjustable motherboard tray offers three installation positions for flexible builds
  • Removable front pillar gives an uninterrupted interior view without losing structural rigidity
  • Reversible frame and GPU bracket let you choose left- or right-side display orientation
  • Triple 420 mm radiator support at top, side and bottom handles high-heat components
  • ARGB lighting strip syncs to the motherboard for coordinated illumination

Product identity

The Lian Li O11DEXL-X is an ATX mid tower case built from aluminium steel and tempered glass. It suits builders who want a large showcase chassis with flexible motherboard positioning and extensive radiator support. The black finish and integrated ARGB strip give a clean aesthetic for high end gaming or workstation builds. Buyers who need a compact footprint or a case that includes fans and a power supply should look elsewhere.

Compatibility checks

Verify that your motherboard form factor matches ATX E-ATX Micro ATX or Mini ITX. Ensure your graphics card does not exceed 460 mm in length and your CPU cooler stays within 167 mm height. Confirm the power supply length is no more than 220 mm. Plan for three 2.5 inch drives and check that your front panel headers provide USB 3.0 USB Type C and audio connections.

Thermals noise and power

The case supports up to three 420 mm radiators at the top side and bottom plus multiple 120 mm or 140 mm fan positions on every panel. No fans are pre installed so acoustic profile and airflow depend entirely on your chosen components. Dust filters on the bottom side and top help maintain clean intake paths. The open bottom panel and mesh finished aluminium panels promote strong airflow when the interior is populated with adequate cooling hardware.

Highlights

  • Height-adjustable motherboard tray offers three installation positions for flexible builds
  • Removable front pillar gives an uninterrupted interior view without losing structural rigidity
  • Reversible frame and GPU bracket let you choose left- or right-side display orientation
  • Triple 420 mm radiator support at top, side and bottom handles high-heat components
  • ARGB lighting strip syncs to the motherboard for coordinated illumination

Specifications

BrandLIAN LI
ModelO11DEXL-X
TypeATX Mid Tower
ColorBlack
Case MaterialAluminum / Steel / Tempered Glass
With Power SupplyNo
Motherboard CompatibilityATX / E-ATX / Micro ATX / Mini ITX
Side Panel2 x Sides Tempered Glass Panel
LEDARGB
Dust FiltersBottom / Side / Top
Internal 2.5" Drive Bays3
Expansion Slots8
Front Ports4 x Buttons, 4 x USB 3.0, 1 x USB Type-C, 1 x Audio
Fan OptionsBottom - 3 x 120mm / Bottom - 3 x 140mm / Rear - 2 x 120mm / Side - 3 x 120mm / Side - 3 x 140mm / Top - 3 x 120mm / Top - 3 x 140mm
Pre-installed FansNo Fan Installed
Radiator OptionsBottom - Up to 420mm / Side - Up to 420mm / Top - Up to 420mm
Max GPU Length460 mm
Max CPU Cooler Height167 mm
Max PSU Length220 mm
Dimensions20.55" x 11.97" x 20.94"
Shipping weight19.48 kg
Package size660 × 622 × 409 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the case ship with any fans or a power supply, or do I need to buy them separately?

No fans and no power supply are included; both must be purchased separately.

The specs list both 120 mm and 140 mm fan mounts — which size should I choose?

Either size fits; 140 mm fans move more air at lower RPM while 120 mm fans are more widely available.

With a 460 mm GPU limit and 167 mm CPU cooler height, will my large components actually fit?

Yes — the case accepts graphics cards up to 460 mm long and CPU coolers up to 167 mm tall.

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