Thermaltake Urban S21 vs Urban SD1 Case Comparison

Thermaltake Urban S21 and Thermaltake Urban SD1 are both cases with the same External 3.5" Drive Bays (1) and Front Panel I/O (USB 3.2 Gen 1 Type A). The main differences are in External 5.25" Drive Bays, Internal 2.5" Drive Bays, Internal 3.5" Drive Bays and Motherboard Compatibility.

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Thermaltake Urban S21	Thermaltake Urban SD1
Prices (Change region) - Buy now	Prices (Change region) - Buy now
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Pangoly Score (How do we rate?) 77	Pangoly Score (How do we rate?) -
Brand Thermaltake	Brand Thermaltake
Model VP800A1W2N	Model CA-1A9-00S1NN-00
Release Date 📅 May 2013	Release Date 📅 October 2014
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (4 reviews) Add a product review	User reviews ★★★★★ (8 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 2x Quiet fans included Long graphic cards support Build quality	Pros -
Cons Poor cable management Not much space for high CPU coolers	Cons -
Type ATX Mid Tower	Type MicroATX Mini Tower
Color Black	Color Black
Includes Power Supply No	Includes Power Supply No
External 5.25" Drive Bays 3	External 5.25" Drive Bays 2
External 3.5" Drive Bays 1	External 3.5" Drive Bays 1
Internal 2.5" Drive Bays 0	Internal 2.5" Drive Bays 2
Internal 3.5" Drive Bays 5	Internal 3.5" Drive Bays 2
Motherboard Compatibility ATX, Micro ATX, Mini ITX	Motherboard Compatibility Micro ATX, Mini ITX
Front Panel I/O USB 3.2 Gen 1 Type A	Front Panel I/O USB 3.2 Gen 1 Type A
Dimensions 436 mm x 185 mm x 497 mm	Dimensions 238 mm x 281 mm x 454 mm
Volume 40 L	Volume 30 L
Max VGA length allowance 320 mm	Max VGA length allowance 350 mm
Expansion Slots 7	Expansion Slots 4
Back Connect Support No	Back Connect Support No