noblechairs collection 2016
Lian Li

Lian Li
PC-O11 Air Midi-Tower, Tempered Glass - Black

  • Compact dual-chamber Midi-Tower
  • Optimised for air-cooling by Lian Li & der8auer. Tempered glass side panel
  • Up to 12x 120 mm fans
  • 2x 120 mm fans pre-installed
  • 4x 360 mm radiators possible
  • 1x USB Type C and 2x USB 3.0 on the front panel


in stock


Item number: GELI-811

EAN: 4718466008756


Manufacturer: Lian Li


Product information - PC-O11 Air Midi-Tower, Tempered Glass - Black

The black Lian Li O11 Air Midi-Tower is a particularly premium case, one that combines stylish air inlets with attractive tempered glass elements. In comparison to its siblings in the series, this variant provides a special focus on air cooling. To this end, Lian Li worked closely with German overclocking guru Roman "der8auer" Hartung. His logo adorns a plaque on the inside of the neat and tidy case. The dual-chamber design of the ATX case has been retained, meaning that plenty of space is available for high-end gaming hardware and all the necessary cabling. The forté of this case, however, lies in the fact that it offers incredible air cooling.

The Features of the Lian Li O11 Air Midi-Tower:

  • Premium combination of steel and tempered glass
  • Space for motherboards including E-ATX-, ATX- or Micro-ATX form factor boards
  • Clever dual-chamber design
  • 6x 2,5"-SSDs & 3x 3,5"-HDDs
  • Front panel with 2x USB 3.0 Type-A & 1x USB 3.1 Type-C
  • Supports graphics cards up to 42 cm long
  • Four slots for radiators up to 360 mm in length
  • Up to twelve 120 mm fans possible
  • Space for two power supplies

Incredible Airflow in the Lian Li O11 Air

In total, up to twelve 120 mm fans can fit in the Lian Li O11 Air and the rear of the case offers enough space for two 80 mm fans at the same time. The case is, with the exception of the tempered glass side panel, covered in air inlets to better enable optimal airflow. On the front, up to three 120 mm fans can be attached while as an alternative there is also space for two 140 mm fans. Two 120 mm PWM fans already come pre-installed courtesy of Lian Li themselves. The same layout is used for the roof of the case. On the bottom of the case an in between the motherboard tray and the front there is sufficient space for three 120 mm fans in each location. As a result, not only is the interior of the case cooled, but also the chamber located behind the motherboard as well.

Naturally, instead of fans users are also welcome to install compatible radiators instead. The case offers users the option of installed up to four 360 mm radiators: one in the roof, one on the bottom and one next to the motherboard. Should four 360 mm radiators be installed at the same time, the tom and bottom of the case offers space only for narrow radiators, and a slim radiator must be used next to the motherboard. Generally, three triple-rads is possible, however you must pay extra attention to the components used for the custom water cooling. The top of the case also allows for the possibility of installing a 280 mm radiator.

Plenty of Space for Hardware and Optical Drives

The Lian Li PC-O11 Air Midi-Tower is capable of holding an E-ATX motherboard in the left chamber, up to a 420 mm long graphics card and an up to 155 mm high CPU cooler. The chamber behind the motherboard tray serves not only to improve cable management, but it also allows space for installed both of the optional power supplies. The first power supply (ATX) can be installed vertically in the lower section of the case, while up above there is space for a second ATX-size power supply - at least if you forfeit the HDD cage which is already there. Both power supplies can be up to 255 mm long. To maximise the ease and convenience of your cable management, several partially rubberised cable passthroughs are also available which would place them near the edges of the motherboard.

The HDD cage can hold two 3,5" HDDs or 2,5" drives as an alternative. Both slots can be reached from the back of the case, and are covered with a perforated bracket. An additional 2,5" SSD and a 3,5" drive can be installed on the reverse of the motherboard. There are additionally two 2,5"-brackets which come screwed to the bottom of the right side panel. In total, three 3,5"- and six 2,5" data storage devices can be installed in the Lian Li O11 Air.

ATX Case with Premium Design & Tempered Glass

The Lian Li O11 Air Midi-Tower utilises 8 mm steel paired with a tinted tempered glass side panel. On the exterior, Lian Li has built the O11 Air from the ground up for the air cooling that users desire. The front and roof of the case are both equipped with wide air inlets that are accentuated by the addition of stylish stryts. The right side panel comes with classic mesh-style air inlets set lengthwise in two separate rows. The back row serves to provide the power supplies with fresh air, the front row ensures the fans next to the motherboard tray have sufficient air. The rear of the case also comes with plenty of air inlets near the power supplies as well as the seven PCI slots.

The Lian Li PC-O11 Air Midi-Tower is slightly raised on rubberised steel feet, ensuring that cool air gets through the dust filters and into the case. The chimney effect ensures warm air travels upwards, into the roof which also comes with a dust filter. Two further dust filters cover the frilles in the right hand side. The front offers one of the total of five dust filters. The I/O panel comes situated off to the right side at the front. In addition to two USB 3.0 ports, there is also a USB 3.1 Type C port, perfect for the convenience of not having to find which way to correctly insert a USB device. There are also, naturally, the standard audio jacks as well as an on/off switch.

The elegant Lian Li O11 Air Midi-Tower is not merely an incredibly good-looking case that is capable of holding a tremendous amount of gaming hardware effortlessly, it is also designed for PC enthusiasts that really care about achieving optimal cooling.

Technical Details:
  • Dimensions: 270 x 465 x 476 mm (W x H x D)
  • Material: Steel (interior), tempered glass (side panel), plastic (front, roof)
  • Weight: approx. 9,5 kg
  • Colour: Black
  • Form Factor: E-ATX, ATX, Micro-ATX
  • Total Possible Fans:
    3x 120 mm / 2x 140 mm (front)
    3x 120 mm / 2x 140 mm (bottom)
    3x 120 mm (top)
    3x 120 mm (front side)
    2x 80 mm (rear)
  • Pre-Installed Fans:
    2x 120 mm PWM (front)
  • Radiator Mountings (forfeits fan slots):
    1x max. 360 mm (roof)
    1x max. 360 mm / 280 mm (front)
    1x max. 360 mm (bottom, forfeiting SDD brackets)
    1x max. 360 mm (side panel, next to motherboard)
  • Filter: Front, bottom, roof, side panel
  • Drive Bays:
    3x 3,5" drives (internal)
    6x 2,5" bays (internal)
  • Power Supply: 2x ATX (optional)
  • Expansion Slots: 7
  • I/O Panel:
    1x USB 3.1 Type-C (internal connection)
    2x USB 3.0 Type-A (internal connection)
    1x Audio In/Out
    On-/Off Switch
  • Maximum GPU Length: 420 mm
  • Maxium CPU Cooler Height: 155 mm
  • Maximum PSU Length: 255 mm

Further links for "PC-O11 Air Midi-Tower, Tempered Glass - Black"

Lian Li



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Technical Details

max. Mainboardformfaktor E-ATX
Case type Midi-Tower
Form factor E-ATX, ATX, Micro-ATX
Colour black
Primary colour black
Width (exact) TRIM Support
Height (exact) 465
Depth (exact) 476
Width 200 - 300 mm
Height 400 - 500 mm
Depth 400 - 500 mm
Weight (exact) 9.5
Weight 8 to 10 kg (17.6 to 22 lbs)
Material plastic, steel, Tempered Glass / Hartglas
max. CPU Kühler Höhe (exakt) 155 mm
max. Grafikkarten Länge (exakt) 420 mm
max. Netzteil Länge (exakt) 255 mm
max. CPU Kühler Höhe 140 - 159 mm
max. Grafikkarten Länge 400 - 500 mm
max. Netzteil Länge 250 - 300 mm
Side panel with window
Front Door Green
Position I/O Front
USB 3.0 2x
USB 3.1 (Typ C) 1x
Audio Out
Audio In
Cardreader nein
Fan controller no
LCD/TFT Display nein
internal 2,5" 6x
internal 3,5" 3x
Hot-Swap nein
PCI-Slots 8
Motherboard tray no
Case cable management yes
PSU formfactor ATX
PSU position Hinten Unten
Preinstalled fans No
80 mm Fans 2
120 mm Fans 12
140 mm Fans 4
Fan colour black
Radiator Mounting 4x Triple (360 mm)
Filter yes
Dampening no
Illumination no
Remote control nein
Schlauchdurchführung nein
Serie PC-O11
Transport System nein

Customer review "Lian Li PC-O11 Air Midi-Tower, Tempered Glass - Black"

Average customer review
Star Rating
(from 3 customer reviews)
really perfect this case will not find you better
This is the BEST case at this price point! you won't find a better one in this price...
Marc Kilian
Grundsätzlich erfüllt das Gehäuse alle Belange die ich mir auch erhofft hatte. Es...
No Limit (3)
100% (3)
0% (0)
0% (0)
0% (0)
0% (0)


really perfect this case will not find you better


Best case at this price class

This is the BEST case at this price point! you won't find a better one in this price class!

First of all, nothing beats the fan and radiator options at 129€!

- can be equipped with 3x 360 radiators
- up to 4 different positions for the 360 radiators
(total fit 3)
- clean design with window panel
- low price for the fan/radiator options we get!(129€)
- looks very clean
- up to 12 total fans!


- Dust filter might increase temps a little, but i just removed it from the case.

excellent job by Lian Li & DER8AUER!

Marc Kilian

Sehr gutes Produkt mit für mich nur einem Fehler

Grundsätzlich erfüllt das Gehäuse alle Belange die ich mir auch erhofft hatte.

Es ist optisch sehr ansprechend, gut verarbeitet und hat alle Finessen die ich mir gewünscht hatte.

Das einzige Problem ist in meinem Fall, dass ich eine Hybridgrafikkarte besitze, um genau zu sein die EVGA 1080ti Hybrid. und der Platz gen Sichtfenster ist bei diesem Gehäuse stark beschränkt. Wodurch ich mir kurzfristig noch ein vertical GPU mounting set bestellen muss.

Ansonsten bin ich vollends zufrieden und für luftgekühlte Karten besteht hier keinerlei Problem.

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  • Lian Li PC-O11 Air Midi-Tower, Tempered Glass - Black - Ocaholic - Lian Li PC-O11 Air

    Ocaholic - Lian Li PC-O11 Air

    + Kompatibilität Wasserkühlung
    + Staubfilter
    + Umfangreiches Bundle + Tempered glass
    + Zwei Netzteile + Verfügbarer Platz für Custom-Wasserkühlungen
    + Verarbeitungsqualität + Interesanter Preis

  • TechPowerUp - Lian Li PC-O11 Air

    + Extremely compact considering its compatibility with liquid cooling and GPUs
    + May hold three 360 mm radiators
    + Comes with two fans out of the box
    + Can be used with a dual-PSU setup
    + No restriction in GPUs even when filled with radiators
    + Can hold up to six storage drives
    + USB 3.1 Type C connector part of I/O
    + Dust filters on all air vents—two on the side, one on top, and one on the + floor of the chassis
    + Two well-designed glass panels
    + Excellent access as glass and side panels are easily removable
    + Available in black or white

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The system or bundle is only assembled individually by us after the order has been placed and its payment been completed. Please note the stock status of all the individual components as well as further information in the product description.


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