NZXT H2 Flow (2026) / Lian Li O11 Dynamic EVO RGB

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

Lian Li O11 Dynamic EVO RGB: O11D EVO RGB; Black (O11DERGBX) and White (O11DERGBW). The O11 Dynamic EVO (without RGB strips), O11 Dynamic EVO XL and O11 Vision are separate cases.

SpecificationNZXT H2 Flow (2026)Lian Li O11 Dynamic EVO RGB
Release year20262024
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 (under 280 mm), ATX, Micro-ATX, Mini-ITX; 7 expansion slots

The motherboard can be mounted at two heights, and the case can be flipped for a left or right view.

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		—
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 type—Tower chassis; 478 × 290 × 471 mm (D × W × H) Lian Li
Materials—4.0 mm tempered glass, aluminium, steel

The front and side glass panels and removable pillar give an uninterrupted view of the components.

Lian Li
Cooling—Radiator: top 240/360/420 mm, side 240/280/360 mm, bottom 240/280/360 mm. Fans: top, side and bottom 3 × 120 or 3 × 140 mm; rear 1 × 120 mm

A 420 mm top radiator needs a separate bracket. There are no screw points for 3 × 140 mm fans at the top and bottom; Lian Li supports only UNI FAN models there, which hold without screws.

Lian Li
Clearances—Graphics card up to 455.7 mm; CPU cooler up to 167 mm; ATX power supply up to 220 mm

The included GB-003 GPU anti-sag bracket only works with a card in the second expansion slot.

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Storage—Side fan bracket: 2 × 3.5-inch or 4 × 2.5-inch; behind motherboard tray: 2 × 2.5-inch; drive cage: 2 × 3.5-inch or 2.5-inch Lian Li
Front I/O—2 × USB 3.0; 1 × USB 3.1 Type-C; audio; colour, mode, brightness, reset and power buttons Lian Li
Lighting—1.5 mm L-shaped ARGB strips at the top and bottom; 14 effects; motherboard sync

Holding the mode button for 3 seconds syncs the lighting with motherboard software; holding again cancels it.

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Dust filter and warranty—1 bottom dust filter; 1-year warranty Lian Li