Lian Li A4-H2OX5 vs Antec One Case Comparison

Lian Li A4-H2OX5 and Antec One are both cases with the same Internal 2.5" Drive Bays (1). The main differences are in External 5.25" Drive Bays, Internal 3.5" Drive Bays, Motherboard Compatibility and Front Panel I/O.

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Lian Li A4-H2OX5	Antec One
Prices (Change region) In Stock $154.99 Last updated 4 minutes ago. In Stock Free shipping $154.99 In Stock Free shipping $154.99 In Stock $154.99 Show 1 more offers	Prices (Change region) - Buy now
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Pangoly Score (How do we rate?) -	Pangoly Score (How do we rate?) 82
Brand Lian Li	Brand Antec
Model A4H2OX5	Model One
Release Date 📅 March 2026	Release Date 📅 February 2012
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews ★★★★☆ (122 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 -	Pros Build quality Access to CPU backplate Two 2.5'' bays 2x USB 3.0 ports Dust filter for PSU
Cons -	Cons No dust filters for the fans
Type Mini ITX Desktop	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 3
External 3.5" Drive Bays 0	External 3.5" Drive Bays 0
Internal 2.5" Drive Bays 1	Internal 2.5" Drive Bays 1
Internal 3.5" Drive Bays 0	Internal 3.5" Drive Bays 6
Motherboard Compatibility Mini ITX	Motherboard Compatibility ATX, Micro ATX, Mini ITX, Thin Mini ITX
Front Panel I/O USB 3.2 Gen 1 Type A, USB 3.2 Gen 2 Type C	Front Panel I/O USB 3.2 Gen 1 Type A
Dimensions 326 mm x 140 mm x 244 mm	Dimensions 436 mm x 208 mm x 487 mm
Volume 11 L	Volume 44 L
Max VGA length allowance 322 mm	Max VGA length allowance 266 mm
Expansion Slots 3	Expansion Slots 8
Back Connect Support No	Back Connect Support No