Case Overview

Introduction

This chapter introduces the Lian Li O11 Dynamic Mini V2 Flow before installation begins.

The case is a compact dual-chamber chassis with tempered-glass front and side panels, a separate rear chamber for the PSU and cable management, and a Flow configuration that includes five reverse-blade 120mm PWM fans.

Purpose

Confirm the case layout, airflow design, fan positions, radiator support, clearance limits, and cable-routing areas before installing hardware.

Estimated Time

20-30 minutes.

Difficulty

Beginner.

Required Tools

Lian Li O11 Dynamic Mini V2 Flow case.
Case accessory box.
Phillips #2 screwdriver.
Small container for screws.
Microfibre cloth for glass panels.
Case manual or product page.

Warnings

Remove tempered-glass panels carefully and place them on a soft, stable surface.
Do not build with glass panels balanced upright against a wall or desk.
Do not overtighten panel screws, motherboard screws, fan screws, or radiator screws.
Keep case screws separated by type.
Confirm fan cable paths before installing the motherboard, because access becomes tighter later.
Treat the top 360mm AIO fit as compatible but clearance-sensitive because the ARCTIC radiator is 38mm thick and requires at least 63mm total installation clearance with fans.

Step-by-Step Instructions

Fan layout

Airflow direction

Diagram source: airflow.mmd

Place the case on a stable work surface.
Remove the glass side panel and front glass panel.
Remove the rear steel panel.
Locate the main chamber, rear cable chamber, PSU chamber, fan brackets, and drive cages.
Confirm the five pre-installed Flow fans are present: three bottom intake fans and two side intake fans.
Locate the top fan and radiator bracket.
Locate the front I/O module and decide whether it will remain at the bottom or move to the top.
Locate the ATX PSU mounting area in the rear chamber.
Locate the cable-routing paths for the 24-pin motherboard cable, CPU EPS cables, PCIe GPU cable, USB headers, front audio, and front-panel wiring.
Locate the horizontal and vertical GPU support hardware.
Confirm the case accessories are present before installing hardware.

Case Identity

Item	Detail
Model	Lian Li O11 Dynamic Mini V2 Flow
Black Flow SKU	`O11DMIV2FX`
Chassis volume	45.38L
Motherboard support	ATX, Micro-ATX, Mini-ITX, and ATX back-connect
GPU length clearance	400mm
CPU air-cooler height clearance	160mm
PSU support	ATX PSU under 200mm
Top radiator support	240mm, 280mm, or 360mm
Side radiator support	240mm
Maximum 120mm fan support	9 x 120mm
Included Flow fans	2 x side reverse-blade 120mm PWM, 3 x bottom reverse-blade 120mm PWM
Front I/O	2 x USB 3.0, 1 x USB 3.2 Type-C, 1 x audio, 1 x power button

Layout

Area	Purpose
Main chamber	Holds the motherboard, GPU, AIO pump/block, top radiator, visible fan layout, and visible cable exits.
Rear chamber	Holds the PSU, excess cable length, drive cages, and cable tie-down points.
Bottom fan area	Provides direct GPU intake airflow through the slanted bottom design.
Side fan area	Provides additional intake airflow beside the motherboard tray.
Top bracket	Holds the 360mm AIO radiator and fans for this build.
Rear panel area	Provides access to cable routing and PSU installation.

Compatibility Evidence

Build item	Required size or support	Case support	Result
Motherboard	Gigabyte B850 AORUS Elite WiFi7 is ATX	O11 Dynamic Mini V2 supports ATX	Pass
GPU	Gigabyte RX 9060 XT Gaming OC 16GB is 281mm long	Case supports 400mm GPUs	Pass, with 119mm spare length clearance
PSU	ASUS TUF Gaming 1000W Gold is 150mm long	Case supports ATX PSUs under 200mm	Pass, with 50mm spare PSU length clearance
AIO radiator	ARCTIC Liquid Freezer III Pro 360 uses a 360mm radiator	Case supports top 360mm radiator	Pass, but clearance-sensitive
AIO thickness	ARCTIC radiator is 38mm; with standard 25mm fans the assembly is about 63mm	ARCTIC requires at least 63mm case clearance	Conditional pass; use the top bracket and confirm clearance before final wiring
Front USB-C	Case has USB 3.2 Type-C front I/O	Motherboard has `FU3C_20G` front USB-C header	Pass
Front USB-A	Case has 2 x USB 3.0	Motherboard has `FU3A_5G` front USB 3.2 Gen 1 header	Pass
Front audio	Case has front audio	Motherboard has `F_AUDIO`	Pass

Radiator and Fan Plan

Use the ARCTIC Liquid Freezer III Pro 360 in the top radiator position.

Recommended airflow for this build:

Position	Fan direction	Reason
Bottom, included 3 x 120mm reverse-blade fans	Intake	Feeds the GPU directly.
Side, included 2 x 120mm reverse-blade fans	Intake	Adds fresh air to the main chamber.
Top, 360mm AIO fans	Exhaust	Removes CPU heat through the radiator.
Rear, optional 120mm fan	Exhaust if added later	Helps remove warm air near the rear I/O area.

This creates a simple bottom/side intake and top exhaust layout. The exact fan curve is configured later in BIOS.

AIO Fit Decision

The ARCTIC cooler is not a normal thin 360mm AIO. Its radiator is 38mm thick, and ARCTIC states that the Liquid Freezer III Pro requires at least 63mm of clearance for installation. With the included radiator fans, treat the top mount as a tight but acceptable target.

Build decision:

Use the top radiator bracket.
Install the radiator and fans on the removable bracket before final motherboard cabling.
Route CPU EPS cables before the radiator is fully fixed if access is tight.
Do not add top-mounted RGB/fan accessories that reduce radiator clearance.
Re-check cable strain at the top-left CPU power connectors before closing the case.

Front I/O Decision

Use the front I/O in the most convenient location for the desk layout.

For a desk-side tower, top I/O is usually easier to reach. For a case placed on top of a desk with the lower edge accessible, bottom I/O can keep cables visually cleaner.

The motherboard supports the required case I/O:

USB-C cable to FU3C_20G.
USB-A cable to FU3A_5G.
Audio cable to F_AUDIO.
Power switch cable to F_PANEL.

Verification Checklist

Common Mistakes

Installing the motherboard before routing CPU EPS cables.
Forgetting that the Flow version already includes five fans.
Treating the ARCTIC radiator like a thin 27mm radiator.
Installing the radiator before checking top-left motherboard cable access.
Leaving the front I/O module in an inconvenient position for the final desk layout.
Scratching glass panels by placing them on a hard surface.
Over-tightening glass or bracket screws.
Confusing reverse-blade intake fans with standard exhaust orientation.

Expected Result

The case is open, inspected, and understood. The fan direction, radiator position, PSU fit, GPU fit, front I/O routing, and clearance-sensitive AIO plan are confirmed before build preparation begins.

Sources Reviewed

Next Chapter

Continue to Tools.