NZXT H2 Flow (2026) / Lian Li O11 Air Mini

NZXT H2 Flow (2026): CI-H21FB-01 · black; Mini-ITX case

Lian Li O11 Air Mini: O11 Air Mini (2021); black O11AMX and white O11AMW. The O11 Dynamic Mini, O11D Mini V2 Flow and full-size O11 Dynamic are separate cases.

SpecificationNZXT H2 Flow (2026)Lian Li O11 Air Mini
Release year20262021
Model year2026 NZXT—
Dimensions and volume435 × 181 × 263 mm (height × width × depth); 20.7 L NZXT—
Weight4.55 kg; empty case NZXT—
ConstructionSteel; hybrid tempered-glass and mesh side panel NZXT—
MotherboardMini-ITX; no back-connect motherboard support NZXTE-ATX (up to 280 mm wide), ATX, Micro-ATX, Mini-ITX

The 7-slot back panel is for ATX, Micro-ATX and ITX; the 5-slot back panel is for Micro-ATX and ITX. Both are included.

Lian Li
Power supplySFX / SFX-L; up to 130 mm long

Not designed for an ATX power supply.

NZXT		—
Graphics card clearanceUp to 331 mm long, 65 mm thick and 150 mm wide NZXT—
Combined GPU and radiator fitFront AIO tube covers, fittings and cables can reduce available GPU width

Being shorter than 331 mm does not alone guarantee compatibility.

NZXT		—
CPU air cooler75 mm maximum height

NZXT's product guidance also calls for at least 10 mm between the cooler and glass.

NZXT		—
Front radiatorUp to 280 mm; combined radiator and fan thickness up to 60 mm NZXT—
Fan mountsFront: 2 × 120 or 2 × 140 mm; top: 2 × 120 mm NZXT—
Included fansTop: 2 × 120 mm F120Q Case Version exhaust fans; 3-pin DC

Not PWM fans or a guarantee of whole-system silence.

NZXT		2 × 140 mm PWM at the front, 1 × 120 mm PWM at the rear

PWM fans adjust their speed to temperature using a signal from the motherboard.

Lian Li
Front connections2 × USB 3.2 Type-A; 1 × USB-C 3.2 Gen 2×2; headset jack NZXT—
Drive bays2 × 2.5-inch, up to 8.5 mm thick; no 3.5-inch bays NZXT—
Expansion and riser3 vertical slots; included 260 mm PCIe 5.0 ×16 riser

Three slots of width do not mean three separate PCIe connections.

NZXT		—
Size and materials—400 (D) × 288 (W) × 384 (H) mm; 4 mm aluminium panel, 0.8 mm mesh panel, 4 mm tempered glass

The mesh pattern on the front, top and side is designed to let fans draw air straight from outside.

Lian Li
Graphics card and vertical mounting—Up to 362 mm long; 7 or 5 expansion slots; vertical GPU support (top or bottom mode)

With the vertical GPU bracket in top mode, two 120 mm fans can be fitted under the card; in bottom mode there is no room for them.

Lian Li
CPU cooler and power supply—CPU cooler up to 170 mm; ATX power supply up to 200 mm Lian Li
Fan support—Top 3 × 120 / 2 × 140 mm; side 2 × 120 mm; bottom 2 × 120 / 2 × 140 mm; front 2 × 120 / 2 × 140 mm; rear 1 × 120 mm Lian Li
Radiator support—Top 240 or 280 mm; side 240 mm; bottom 240 or 280 mm; front 240 or 280 mm

When fitting a 240 mm radiator at the top with an ATX board, an offset bracket is used to avoid clashing with memory modules.

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Storage—6 × 2.5-inch SSD or 3 × 2.5-inch SSD + 3 × 3.5-inch HDD

Drives mount in the chamber behind the motherboard tray.

Lian Li
Front I/O—2 × USB 3.0, 1 × USB 3.1 Type-C, 1 × HD Audio

The Type-C port needs a matching front-panel USB-C header on the motherboard.

Lian Li
Dust filter—1 × removable bottom dust tray Lian Li