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Rosewill 4U Server Chassis Rackmount Case | 8 3.5" HDD Bays, 3 5.25" Devices | E-ATX Compatible | 5 Front 120mm Fans, 2 Rear 80mm Fans | 2X USB 3.0 | Front Panel Lock | Silver/Black - RSV-L4000U
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AI Verdict
This 4U rackmount chassis offers 8 internal 3.5" HDD bays and E-ATX compatibility, making it a budget-friendly foundation for a DIY server build, provided you plan for fan and rail upgrades.
This chassis is a situational fit because its 8 internal 3.5" HDD bays and E-ATX compatibility offer a solid foundation for a server build. However, the need to replace the 7 pre-installed fans and purchase separate rackmount rails means it's not a ready-to-go solution.
If you need better out-of-the-box cooling and hot-swap capabilities, look for server chassis that explicitly list included high-performance fans and integrated hot-swap bays.
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Pros
- Accommodates E-ATX motherboards and 7 PCI expansion cards, offering broad component compatibility.
- Features 8 internal 3.5" HDD bays and 3 external 5.25" bays for extensive storage configurations.
- Includes 5 front 120mm and 2 rear 80mm fan mounts, allowing for significant airflow with upgraded fans.
- Constructed with 1mm thick steel, providing a sturdy and rigid structure.
- Front panel includes 2 USB 3.0 ports and LED indicators for power, HDD, and LAN status.
Cons
- The 7 pre-installed fans are often described as insufficient for server-grade hardware and lack RPM control.
- Installing or replacing 3.5" HDDs requires significant disassembly and often necessitates SATA extension cables due to port orientation.
- Rackmount rails are not included, requiring a separate purchase and potential alignment issues with standard racks.
- Cable management is challenging due to internal layout and HDD port orientation.
- The internal drive system is not hot-swappable by default, unlike many server chassis.
Dimension Scores
The chassis offers 8 internal 3.5" HDD bays and E-ATX compatibility, providing good output potential, but the stock fans are inefficient for cooling server-grade hardware.
The pre-installed fans are frequently described as 'trash-tier' and loud, with users recommending immediate replacement for noise reduction.
Constructed from 1mm thick steel, the chassis is sturdy, though some users reported minor issues like over-tightened screws and a 'thrown together' feel compared to higher-end options.
Cable management is challenging due to the internal layout and the outward-facing HDD ports, which often require extension cables.
Best For
- Home lab enthusiasts building a budget server with custom cooling solutions.
- Users needing a high-capacity storage solution with 8+ 3.5" drives.
- DIY system builders who are comfortable with component modifications and upgrades.
Not Recommended For
- Users requiring out-of-the-box quiet operation or high-performance stock cooling.
- Environments where frequent hot-swapping of drives is necessary.
- Individuals seeking a quick, tool-less assembly experience without additional purchases.
Watch Out For
- The stock fans are 'trash-tier' and will not push enough air for real server-grade hardware; budget for 2x 80mm and at least 3x 120mm replacement fans.
- Adding or replacing a hard drive means taking 'practically the entire thing apart,' and the HDD port orientation requires SATA power and data extension cables.
- Rackmount rails are not included, and some users report issues with third-party rail alignment, potentially making the case sit 1/3rd of a U off.
- Large CPU coolers might not fit; one user noted a Threadripper cooler exceeded case height even without a motherboard installed.
- The front panel's design can restrict airflow, causing fan noise to increase considerably when closed.
Full Specifications
| ASIN | B096T3J8CQ |
| Brand | Rosewill |
| Color | Silver |
| Series | RSV-L4000U |
| Fan Size | 120 Millimeters |
| Material | Aluminum |
| Case Type | Desktop |
| Model Name | RSV-L4000U |
| Item Weight | 30.4 pounds |
| Manufacturer | Rosewill |
| Cooling Method | Air |
| Item model number | RSV-L4000U |
| Product Dimensions | 31 x 23 x 11 inches |
| Item Dimensions LxWxH | 31 x 23 x 11 inches |
| Number of USB 2.0 Ports | 1 |
| Number of USB 3.0 Ports | 1 |
| Motherboard Compatability | SSI EEB |
| Power Supply Mounting Type | External Hex |
| Recommended Uses For Product | Business |
What Buyers Say
Many users find this Rosewill chassis to be a budget-conscious starting point for a server, but it's not without its quirks. The most common feedback points to the included fans being inadequate, often replaced immediately for better performance and reduced noise. Hard drive installation is a fiddly process, requiring extensive disassembly and extra cables due to the drive orientation. While the steel construction feels robust, the lack of included rackmount rails and non-hot-swappable bays are consistent points of contention.
“Look, it's cheap for a rackmount case, but you're gonna spend another $100 on decent fans and rails, and then fight with the hard drives every time you touch them. Just know what you're getting into.”
Common Praise
- Spacious interior provides ample room for large motherboards and components.
- Sturdy 1mm steel construction feels durable and rigid.
- Accommodates 8 internal 3.5" HDDs, offering significant storage capacity.
- E-ATX compatibility and 7 PCI slots allow for flexible system builds.
- Good value for the price, especially when purchased on sale.
Common Complaints
- Pre-installed fans are loud and don't move enough air for serious server use.
- Hard drive installation is difficult, requiring removal of multiple components and extension cables.
- Rackmount rails are not included and must be bought separately.
- Cable management is a struggle due to internal design and drive bay layout.
- The internal 3.5" drive bays are not hot-swappable.
Ownership Tips
- The front panel dust filter can restrict airflow, making the stock fans even louder when the door is closed.
- Some users have found the handles' screws to be excessively tight, requiring unconventional tools for removal.
- The case's depth might cause issues with some rack doors if the handles are too long.
- Converting the internal bays to hot-swap requires purchasing additional cages and potentially modifying the front I/O panel.
- Despite the fan mounts, the overall internal design isn't optimized for tool-less component access.
Frequently Asked Questions
Are the included fans quiet?
No, user feedback indicates the pre-installed fans are often loud and inefficient, with many recommending immediate replacement for quieter operation and better airflow.
Does this case come with rackmount rails?
No, rackmount rails are not included with the RSV-L4000U and must be purchased separately.
Is it easy to install hard drives?
Installing hard drives can be cumbersome, often requiring significant disassembly and creative cable management due to the orientation of the drive ports.
Can I install a large CPU cooler?
Clearance for large CPU coolers can be an issue; some users have reported that taller coolers, like certain Threadripper models, may not fit.
Does it support hot-swappable drives?
The internal 3.5" drive bays are not hot-swappable by default. You would need to purchase and install separate hot-swap cages, typically in the 5.25" bays.
Buying Guide
When you're looking at server chassis like this, you're buying a metal box to hold your computer parts, not a fully integrated solution. You need to think about how many hard drives you actually need, what size motherboard you're using, and how much heat your components will generate. Don't just look at the number of fan mounts; consider the quality of the included fans and if you'll need to replace them immediately for proper cooling and noise levels.
4U Rackmount Form Factor
This means the case is 4 units tall (7 inches) and designed to fit into standard server racks. If you don't have a rack, this form factor is probably overkill and less convenient than a tower case.
8 Internal 3.5" HDD Bays
This tells you how many traditional hard drives you can install. If you're building a NAS or a storage server, more bays mean more capacity. However, 'internal' means they aren't easily accessible from the outside, unlike hot-swap bays.
E-ATX Compatible
This indicates the maximum size of motherboard you can install. E-ATX boards are larger than standard ATX and are common in server builds for their extra features and expansion slots. Compatibility ensures your chosen motherboard will fit.
7 Pre-installed Fans
While it sounds like a lot, the quality of these fans can vary wildly. In this case, users often report they're loud and don't move much air, so you might need to factor in the cost and effort of replacing them for effective cooling.
Alternatives
If this chassis doesn't fit your needs, look for rackmount cases with integrated hot-swap drive bays for easier storage management, or models that specify higher-quality, quieter fans and include rackmount rails for a more complete solution.



