Industrial Rackmount Chassis / D-300L
3U High Performance Extended-Depth Rackmount Chassis
A 27.9"-deep 3U chassis for dual-CPU EATX boards, four 5.25" bays, and seven expansion slots — designed for storage and compute density together.
Product Overview
What the D-300L is built for.
Introduce iStarUSA 3U industrial rackmount chassis D Storm D-300L. The full size back plane and width supports dual Intel and AMD CPU motherboard. It has excellent thermal solution with extra cooling fans. Optional 3.5 and 5.25 tray enable hot-swappable storage, RAID configuration, and total storage capacity up to 6 storage drives provide your server or cluster maximum flexibility and performance.
Key Features
Engineered for reliability and integration.
- Patented lockable aluminum front bezel (TW 200281 / 190240, CN 2L01259648.5) — a proven base for custom door, silk-screen, and color programs
- Front-access 2 × USB 2.0 for on-site service and commissioning
- 60mm x1, 80mm x3 ball-bearing cooling fans for sustained airflow under load
- Removable, washable air filter for dusty industrial environments
- Power / HDD LED indicators (with optional TC-ISF08 sensor board for fan and temperature status)
- Power and alarm-reset switches for field diagnostics
Specifications
Technical specifications.
| Model Number | D-300L |
|---|---|
| Product Category | Industrial Rackmount Chassis |
| Form Factor | 3U |
| Motherboard Support | 12 x 13 (EATX, ATX, microATX) |
| Drive Bays | 3.5" Drives: 2 · 3.5" Drive (internal): 1 · 5.25" Drives: 4 |
| Expansion Slots | 7 |
| Cooling | 1x60mm, 3x80mm, removable & washable air filter |
| PSU Support | 1U, 2U |
| Front Connector | 2x USB 2.0 |
| Security | Front Bezel Key Lock |
| Material | 1.2mm SECC Zinc-Coated Steel (Japan Made), aluminum alloy front bezel |
| Dimensions | 19.00" x 5.25" x 27.90" · 482.6 mm x 133.4 mm x 708.7 mm |
| Indicators | Power, HDD, Temperature, Fan (Fan/Temp require sensor board TC-ISF08 ) |
| Switches | Power, Reset |
| Certification | RoHS compliant |
| Ordering Information | Black Bezel:D-300L · Blue Bezel:D-300L-BLUE · Red Bezel:D-300L-RED · Silver Bezel:D-300L-SILVER |
Downloads
Documentation & drawings.
Applications
Where the D-300L is deployed.
Storage Server
Four 5.25" bays for hot-swap cage builds up to six drives.
Data Center
Dual-socket 3U nodes with seven-slot expansion.
Industrial PC
Extra fans for continuous heavy-load operation.
Machine Vision
Full-length card support with deep body.
Factory Automation
Removable washable filter for dusty sites.
OEM/ODM Hardware Platform
Patented bezel and storage customization base.
Customization Options
Adapt the D-300L to your program.
iStarUSA Design-In services cover mechanical, electrical, and lifecycle customization scopes.
Front Panel Customization
Mechanical Modification
Storage Configuration
Power Supply Options
Cooling Design
Branding / Labeling
Long Lifecycle Planning
Two Ways to Buy
Order the standard model — or use it as a platform.
The D-300L is available both as a ready-to-ship standard product and as a starting point for OEM/ODM customization. Pick the path that matches your project.
Option A
Use as Standard Product
Order the D-300L with its published specifications. Ideal when you need a proven configuration, immediate quotation, and comparable datasheets against other models.
- Published specifications and datasheets
- Standard configuration, ready to quote
- Compatible with existing integrations
Option B
Use as Customizable Platform
Start with the D-300L and adapt it for OEM/ODM, Design-In, mechanical modification, or long-term supply programs. Our engineering team supports the full customization scope.
- OEM/ODM branding and mechanical modification
- Design-In engineering support
- Long-lifecycle and BOM stability planning
Related Products
Explore adjacent options.
Design-In Center
Take D-300L into your next project.
Request a quotation on the standard SKU, or start a Design-In conversation around customization, lifecycle, and integration.