Enermax Ostrog vs NZXT H2 Flow Case Comparison

The main differences between Enermax Ostrog and NZXT H2 Flow are in External 5.25" Drive Bays, External 3.5" Drive Bays, Internal 2.5" Drive Bays and Internal 3.5" Drive Bays.

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Enermax Ostrog	NZXT H2 Flow
Prices (Change region) - Buy now	Prices (Change region) In Stock Free shipping $149.99 Out of Stock $189.14
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Pangoly Score (How do we rate?) 78	Pangoly Score (How do we rate?) -
Brand Enermax	Brand NZXT
Model ECA3253-BR	Model CI-H21FB-01
Release Date -	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (10 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 ►
Pros Build quality Removable drive cage	Pros -
Cons Only rear fan included	Cons -
Type ATX Mid Tower	Type Mini ITX Tower
Color Black/Red	Color Black
Includes Power Supply No	Includes Power Supply No
External 5.25" Drive Bays 4	External 5.25" Drive Bays 0
External 3.5" Drive Bays 1	External 3.5" Drive Bays 0
Internal 2.5" Drive Bays 0	Internal 2.5" Drive Bays 2
Internal 3.5" Drive Bays 5	Internal 3.5" Drive Bays 0
Motherboard Compatibility ATX, Micro ATX, Mini ITX	Motherboard Compatibility Mini ITX
Front Panel I/O USB 2.0 Type A, USB 3.2 Gen 1 Type A	Front Panel I/O USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Dimensions 480 mm x 199 mm x 459 mm	Dimensions 263 mm x 181 mm x 435 mm
Volume 44 L	Volume 21 L
Max VGA length allowance 286 mm	Max VGA length allowance 331 mm
Max VGA length allowance (w/o HDD cage) 413 mm	Max VGA length allowance (w/o HDD cage) -
Expansion Slots 7	Expansion Slots 3
Back Connect Support No	Back Connect Support No