The new Lian Li PC-O11 Air is an update to the PC-O11 series to allow more airflow through the chassis. The PC-011 Air has five locations for air intake and exhaust and is able to accommodate a total of twelve 120mm fans and multiple 360mm radiators inside the Mid-Tower sized case. Lian Li dubs the case as the ultimate platform for cooling.

On the outside, the Lian Li PC-O11 Air changes some of its panels (compared to the PC-O11 Dynamic) in order to accommodate more fans in the system and create a better environment with improved airflow. Instead of the sealed glass fascia, the new panel is perforated to let air in and allows for 3x 120mm fans. As far as connectivity goes, the front panel consists of two USB 3.0 ports as well as a USB 3.1 Type-C port along with headphone and microphone jacks and the power button.

The other nine 120mm fan mount points are on the top and bottom as well as the on the inside of the case mounted on the right side of the motherboard tray/baffle. With so much potential airflow, dust prevention was considered and the front, bottom, top, and side panels all use magnetic dust filters to help that cause and keep the dust out. Up to three 360mm radiators can fit inside the case in either a top/bottom/front or top/bottom/side configuration. Using the front mount blocks the side mount location. In addition to the 12 potential fans, two 80mm mounts are found on the back.

Internally the structure looks strikingly similar to the PC-O11 Dynamic on the inside, with its dual chambered setup and plethora of fan mount locations. The chassis is able to support microATX, ATX, and E-ATX sized boards along with the ability to use a heatsink up to 155mm. This height will fit the vast majority of air coolers on the market, but will not fit monsters like the Noctua NHD-14. VGA card length is up to 420mm which should fit just about every modern graphics card.

Cable management should be fairly easy with the angled motherboard tray and back side cable management bar to conceal any mess from cables. A unique feature inside the PC-O11 Air is the ability to use two different power supplies. If a second power supply isn't needed, the mount location can be swapped from top to bottom.

On the storage side of things, a total of six 2.5-inch devices can fit inside with two on the bottom panel in the main chamber, and four more 2.5-inch devices (or three 3.5-inch) can be housed in the dedicated storage and power chamber behind the motherboard.

Lian Li PC-O11 Air
Model PC-O11 Air
Case Type Tower
Dimensions (W) 270mm/10.6"
(H) 465mm/18.3"
(D) 476/ 18.7"
Color Black
Material Front: Plastic
Side: Tempered Glass
Body: 0.8mm SECC
Net Weight 9.5kg/20.9lbs
External Drive Bays None
HDD/SSD Bays 9 (3 x 3.5" + 6 x 2.5")
Expansion Slots
Motherboard Type MicroATX, ATX, E-ATX
System Fan Front: 3x 120mm
Top: 3x 120mm or 2x140mm
Bottom: 3x120mm
Rear: 2x 80mm
I/O Ports 2 x USB 3.0
 1 x USB 3.1 Type-C
2 x 3.5mm jacks
Power/Reset Button
VGA Card Support (L) 420mm/16.5"
(H) 159mm/6.2"
CPU Cooling Support (H) 155mm/6.1"
PSU Support ATX PSU (2x)
Radiator Support *Front: 360mm
Top: 360mm
*Side: 360mm
Bottom: 360mm
*Max of 3 radiators - front OR side is possible

The PC-O11 Air will come in two versions. The base model includes two 120mm fans, while the RGB version uses three Lian Li Bora Lite 120mm fans in addition to the non-RGB fans. The base model is available for $129 from with the RGB version at $149. The case is available for pre-order now and available on July 18th. 

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  • JoeyJoJo123 - Thursday, July 12, 2018 - link

    My only misgivings on this case is that the CPU cooler height is just a few millimeters to short for some of the really nice offerings on the market. This makes it a case that's better suited for radiator usage rather than aircooling, just because the air cooler height is rather diminutive. You'd think 155mm should be plenty, but it's too short to even accommodate the ever common Hyper 212 EVO (159mm height).

    The only choices you have left are the top-down aircoolers or c-type aircoolers to fit the 155mm or less height, but those don't particularly go well with the airflow design of the case, with drawing in fresh air from the front and exhausting it either to the top or the potential 80mm fan placements at the back.

    Wish it were 160mm of cpu cooler height, just that 5mm more enables it to house really large coolers like the Thermalright Le Grand Macho (159mm height, 960g of heatsink mass), the NH-D15 (160mm height, 980g of heatsink mass) if you push the fans down 5mm below their optimal mount position, amongst many many very strong offerings. That extra 5mm really would've made a world of difference for opening up compatibility for big tower air coolers.
  • THUMPer1 - Saturday, July 14, 2018 - link

    Scythe Ninja 4 or 5 are 155mm exact.
  • vailr - Sunday, July 15, 2018 - link

    The photos don't show the location for the PSU (actually: 2x PSU's) very well.
    Newegg has better photos, although it's currently OOS:
  • vailr - Sunday, July 15, 2018 - link

    Corrected Newegg link:

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