• In Stock
  • Sold by Newegg
  • AI Ready
  • Make an Offer
  • New
Brands
Show More
Price
Show More
Chassis Type
Form Factor
Show More
Power Supply
Case Material
Show More
Color
Motherboard Compatibility
Show More
External 5.25" Drive Bays
Show More
External 3.5" Drive Bays
Sold by
Hot-Swap Drive Bays
Internal 3.5" Drive Bays
Expansion Slots
40mm Fans
60mm Fans
80mm Fans
90mm Fans
120mm Fans
All Top Brands
Availability
Condition
Current Promotion
Discount
Useful Links
Customer Ratings
  • NVIDIA AI SUPERCOMPUTE
  • Featured Brands

    See Deals from RosewillSee Deals from Supermicro
Sort By:
View:
Rosewill THOR NAS - Full Tower Workstation Case | Server Chassis | Supports up to 11 3.5" HDD and 13 2.5" SSD | E-ATX Compatible | 1x 140mm PWM Fan | USB 3.2 Type-C | Ideal for AI Servers, DIY NAS
Quick View
Rosewill THOR NAS - Full Tower Workstation Case | Server Chassis | Supports up to 11 3.5" HDD and 13 2.5" SSD | E-ATX Compatible | 1x 140mm PWM Fan | USB 3.2 Type-C | Ideal for AI Servers, DIY NAS

+ $20 off w/ promo code FPSF875, limited offer

  • Motherboard Compatibility: 12" x 13" E-ATX; 12" x 9.6" ATX, 11.2" x 8.2" Mini-ATX and below
  • Power Supply: Supports ATX power supply
  • Internal 3.5" Drive Bays: 11
  • Expansion Slots: 10
  • Model #: THOR NAS
  • Β 
  • $169.99 –
  • Free Shipping
ASKAsk me
PC Case Open Frame ITX Computer Chassis Rack Horizontal DIY Computer Case Desktop Aluminum Bracket Support ATX Power Supply
Quick View
  • $93.55 - $94.95
Aluminum Bracket PC Case Test Bench Open Air Computer Case for ITX Motherboard DIY Bare Frame ITX Chassis Support Intel AMD Graphics Card
Quick View
  • $137.55 - $138.95
DIY Computer Motherboard Case Rack Mini ATX Bracket, DIY Open Aluminum Alloy Frame ATX Motherboard PC Computer Case Support
Quick View
  • $100.55 - $101.95
PC Case All Aluminum Open Air Test Bench Compatible ATX MATX ITX Motherboard Computer Cooling Vertical Personalized Chassis Black
Quick View
  • $287.55 - $288.95
Computer Case Gamer Cabinet ITX MATX ATX Portable,Vertical PC Case Open Frame Rack,DIY Cooler Computer Gaming Chassis Desktop Dynamic(MATX), 1
Quick View
  • $199.55 - $200.95
Mini Itx Case, Small Form Factor PC Case 360 Degrees Open Hollow Cooling DIY Mini Itx Computer Gaming Case Clear Acrylic Micro Itx Case for Desktop PC 100240V
Quick View
  • $121.55 - $122.95
Chassis case Computer Motherboard Case Rack Personality Open Chassis Vertical Overclocking Open Aluminum Frame Chassis Rack
Quick View
  • $117.55 - $118.95
Computer Case DIY Gamers Cabinet ITX MATX PC Case Open Frame Aluminum Creative ATX Desktop Gaming Computer Chassis Rack Dynamic(ATX-Black), 1
Quick View
  • $375.55 - $376.95
PC Case Test Bench ITX Motherboard Open Style Computer Chassis Aluminum Support Water Cooling ATX Power Supply
Quick View
  • $99.55 - $100.95
Clear Acrylic ITX Case, PC Test Bench Open Air Computer Case, 360 Degrees Open Computer Gaming Case
Quick View
  • $117.55 - $118.95
Mini ITX MATX ATX PC Test Bench DIY Open Air Frame Overclock Vertical Case Computer Mount Aluminum Chassis for HTPC Graphics Card/Games/Cooling
Quick View
  • $89.44 - $90.84
Open Frame Pc Case,Electronic Products ATX M ATX Itx Open Chassis Vertical Overclocking Open Aluminum Frame Chassis Rack Black (Red)
Quick View
  • $157.55 - $158.95
Open Air Computer Case PC Test Bench ITX Motherboard Chassis Aluminum Bracket DIY Builiding Bare Frame Support ATX Power Supply 120 Liquid Cooling
Quick View
  • $117.55 - $118.95
EDIY ITX MATX ATX Motherboard Test Bench Open Air Computer Case Chassis Aluminum Bracket DIY Bare Frame Mini-ITX Support Graphics Card(ITX_Silver)
Quick View
  • $91.36 - $92.76
PC Chassis Desktop Computer Open Case Well Cooled Chassis Aluminum Material Test Bench includes Type-C Support Motherboard (ATX)
Quick View
  • $117.55 - $118.95
ITX Motherboard Test Bench Open Air Computer Case Chassis Aluminum Bracket DIY Bare Frame Mini-ITX Support Graphics Card(red&Black)
Quick View
  • $95.44 - $96.84
SilverStone, Tower Chassis
Quick View
Supermicro CSE-E300 Flex-ATX Chassis
Quick View
Supermicro
Supermicro CSE-E300 Flex-ATX Chassis
  • Brand: SUPERMICRO
  • Form Factor: 1U
  • Features: Compact Desktop 1U Server BOX PC Embedded Appliance Chassis Optimized for Flex-ATX and Mini-ITX Motherboard Support 2 x 2.5 internal HDD or 1 x Standard LP AOC Power Switch, Reset Button and LED Indicators Form Factor: Flex-ATX 9.0" x 7.25", Mini-ITX chassis Processor Support: Single Intel and AMD processors Drive Bays: 2 x 2.5" fixed drive bay Buttons: Power On / Off button System Reset Button LEDs: Unit Identification (UID) LED
  • Dimensions: 1.70" x 10.00" x 8.90"
  • Model #: CSE-E300

Server Chassis Guide: Build Your Ideal IT Infrastructure

The server chassis is the backbone of your server setup, housing critical components and ensuring optimal performance. Choose the right chassis to optimize space, airflow, and expandability. Let's explore your options:

Server Chassis by Form Factor

  • Tower Chassis: Versatile and expandable, perfect for growing businesses requiring flexibility and increased storage capacity.
    • Sizes: Full Tower (maximum space), Mid Tower (balanced), Mini Tower (space-saving)
  • Rackmount Chassis: Designed for high-density data centers and server rooms, maximizing space utilization and simplifying cable management.
    • Sizes: Measured in rack units (U), typically 1U, 2U, or 4U
  • Blade Chassis: Ultra-compact and modular, ideal for large-scale deployments where high compute density and shared infrastructure are priorities.

Server Chassis by Brand: Top Manufacturers

  • Rosewill: Budget-friendly, reliable chassis with a focus on rackmount solutions for small to medium businesses.
  • Supermicro: High-performance, enterprise-grade chassis known for their build quality, advanced features, and customization options.
  • Chenbro: Durable and versatile chassis offering a range of form factors and configurations for various IT environments.
  • iStarUSA Group: Specializes in storage-dense chassis with hot-swappable bays and robust cooling solutions.

Server Chassis Buying Guide: Key Technical Considerations

  1. Form Factor: Choose based on your deployment environment, space constraints, and future growth plans.
  2. Size (U) (for rackmounts): Select the appropriate height to fit your rack and server configuration.
  3. Expandability: Consider available drive bays, PCIe slots, and memory capacity for future upgrades.
  4. Cooling: Ensure adequate airflow and fan options to maintain optimal operating temperatures for your components.
  5. Power Supply: Choose a power supply with sufficient wattage and redundancy options to meet your server's demands.
  6. Features: Look for features like hot-swappable drives, redundant power supplies, tool-less access, and cable management options to simplify maintenance and improve reliability.
  7. Brand Reputation: Opt for reputable manufacturers known for quality, reliability, and support to minimize downtime and ensure long-term performance.

Pro Tips for IT Professionals:

  • Thoroughly assess your specific workload and hardware requirements before selecting a chassis.
  • Pay close attention to compatibility with your motherboard, expansion cards, and other components.
  • Factor in future scalability needs when choosing a chassis to avoid costly upgrades down the line.
  • Consult with IT experts or refer to detailed product specifications to make an informed decision.

Bestselling Server Chassis Reviews:

Anonymous
2/18/2026 3:21:35 PM
Great budget 2U chassis

β€œ Really great 2U chassis for the price. ”

Rosewill 2U Server Chassis Rackmount Case | 4 x 3.5" HDD Bays | Micro-ATX Compatible | 3 x 80mm PWM Fans | 2 x USB 3.0 | Silver/Black - RSV-Z2600U
Anonymous
10/17/2025 7:22:05 AM
Sturdy Case

β€œ Supermicro makes great and sturdy cases. ”

Supermicro Case CSE-731I-404B Mini-tower chassis 2x5.25" External HDD Drive Bays and 4x 3.5" Internal HDD Drive Bays 400W
George B.
9/11/2025 7:31:14 AM
Amazing 2U case.

β€œ I usually build in 4U cases, but this was a very well designed 2U case making the build process very easy. ”

Rosewill 2U Server Chassis Rackmount Case | 4 x 3.5"/2.5" HDD, 1 x 5.25" Device | Micro-ATX Compatible | 2 x 80mm PWM Fans | 2 x USB 3.0 | Silver/Black - RSV-Z2700U
tim1724
5/20/2025 7:23:19 PM
Well built, flexible for wide array of applications

β€œ My main reason for choosing it was that I needed a cheap GPU server using consumer grade cards (Geforce RTX 3090) which don't fit in a typical server chassis. ”

SUPERMICRO SuperChassis CSE-745BAC-R1K23B 4U Tower Server Chassis
Michael M.
4/11/2025 4:03:16 AM
Good case, especially when on sale - RSV-L4000U

β€œ There's not a lot of info from Rosewill about this case and what you can fit in it. ”

Rosewill 4U Server Chassis Rackmount Case | 8 x 3.5" HDD Bays + 3 x 5.25" Devices | E-ATX Compatible | 5 x Front 120mm Fans | 2 x Rear 80mm Fans | 2 x USB 3.0 | Front Panel Lock | Silver/Black - RSV-L4000U
Anonymous
4/6/2025 12:51:34 PM
Great chasis for ATX rack mounted server/pc

β€œ A large PC style ATX PSU will likely extend over the CPU socket (I was using a 1600w seasonic); meaning you will have to use an AIO/water cooling setup for the CPU, or at a minimum a 2u height cooler (this is on an ATX MB). ”

Rosewill 4U Server Chassis | Supports up to 4 GPUs | 8 Hot-Swap 3.5"/2.5" SATA/SAS up to 12Gbps | E-ATX Compatible | 3 x 12038 Hot-Swap Fans | 2 x Rear 8038 Fans | USB 3.2 Type-C | With Rail Kit | Ideal for AI Servers
Benjamin A.
9/11/2024 6:05:59 PM
Pretty solid DIY NAS case

β€œ Cheaper than SuperMicro chassis ”

SilverStone Technology CS351 5-Bay SAS-12G / SATA-6G hot-swappable high Performance NAS Chassis, SST-CS351
Robert W.
5/23/2024 12:11:57 AM
Great case for my first homelab.

β€œ This was my first build with a server chassis and i gotta say, aside from the not having a manual in the box if was all simple and self explanatory if youve built cases before. ”

iStarUSA D406-DE8BK Black 4U Rackmount Compact Stylish Server Case