NZXT H2 Flow vs H9 Flow Case Comparison

NZXT H2 Flow and NZXT H9 Flow are both cases with the same Front Panel I/O (USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C). The main differences are in Internal 2.5" Drive Bays, Internal 3.5" Drive Bays, Motherboard Compatibility and Dimensions.

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NZXT H2 Flow	NZXT H9 Flow
Prices (Change region) In Stock Free shipping $149.99 Out of Stock $189.14	Prices (Change region) Out of Stock $81.99 Out of Stock Free shipping $119.99 Out of Stock Free shipping $159.99 Out of Stock Free shipping $164.99 Out of Stock Free shipping $179.99 - Buy now Show 3 more offers
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Brand NZXT	Brand NZXT
Model CI-H21FB-01	Model CM-H91FB-01
Release Date 📅 February 2026	Release Date 📅 January 2023
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Compatible PC parts Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►	Compatible PC parts Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►
Type Mini ITX Tower	Type ATX Mid Tower
Color Black	Color Black
Includes Power Supply No	Includes Power Supply No
External 5.25" Drive Bays 0	External 5.25" Drive Bays 0
External 3.5" Drive Bays 0	External 3.5" Drive Bays 0
Internal 2.5" Drive Bays 2	Internal 2.5" Drive Bays 4
Internal 3.5" Drive Bays 0	Internal 3.5" Drive Bays 2
Motherboard Compatibility Mini ITX	Motherboard Compatibility ATX, Micro ATX, Mini ITX
Front Panel I/O USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C	Front Panel I/O USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Dimensions 263 mm x 181 mm x 435 mm	Dimensions 466 mm x 290 mm x 495 mm
Volume 21 L	Volume 67 L
Max VGA length allowance 331 mm	Max VGA length allowance 435 mm
Expansion Slots 3	Expansion Slots 7
Back Connect Support No	Back Connect Support No