JONSBO/JONSPLUS Z20 Black Micro-ATX Mini Tower PC Case vs Rosewill 3U Server Chassis Rackmount Case, 6X 3.5
Updated August 2026 — JONSBO/JONSPLUS Z20 Black Micro-ATX Mini Tower PC Case wins on design and build quality, Rosewill 3U Server Chassis Rackmount Case, 6X 3.5 wins on size and expansion.
The JONSBO/JONSPLUS Z20 offers better portability and cooling options, making it a more versatile choice. The Rosewill 3U is suited for server needs but lacks some modern features.
Why JONSBO/JONSPLUS Z20 Black Micro-ATX Mini Tower PC Case is better
Portability
JONSBO has a detachable carrying handle.
Cooling
JONSBO supports more fan configurations.
Price
JONSBO is $30 cheaper.
Why Rosewill 3U Server Chassis Rackmount Case, 6X 3.5 is better
Storage
Rosewill has 6 HDD bays.
Expansion
Rosewill supports E-ATX motherboards.
Cooling Fans
Rosewill includes 2 pre-installed fans.
Overall score
Specifications
| Spec | JONSBO/JONSPLUS Z20 Black Micro-ATX Mini Tower PC Case | Rosewill 3U Server Chassis Rackmount Case, 6X 3.5 |
|---|---|---|
| Cooling | Up to 6 fans | 2 x 80mm |
| Power Supply | ATX/SFX | E-ATX |
| USB Ports | USB 3.2 Gen1/Gen2 | 2 x USB 3.0 |
| Material | Steel | Steel |
| Price | $99.99 | $129.99 |
Dimension comparison
Design and Build Quality
When it comes to design and build quality, the JONSBO/JONSPLUS Z20 and the Rosewill 3U Server Chassis offer distinct approaches tailored to different user needs. The JONSBO/JONSPLUS Z20 features a compact micro-ATX design, measuring approximately 14.56x7.32x11.6 inches and constructed with 2mm thick integrated bent steel panels. This construction not only promises durability but also enhances its aesthetic appeal with a clean, modern look. The detachable carrying handle is a unique feature, making it convenient for transport. In contrast, the Rosewill chassis is built for server use, offering a more spacious 3U form factor that supports six internal 3.5-inch HDD bays. This design is practical for those needing ample storage but lacks the portability of the JONSBO model.
Cooling Performance
Cooling performance is crucial for any PC case, and both the JONSBO/JONSPLUS Z20 and the Rosewill 3U chassis provide effective solutions. The JONSBO features multiple fan options, accommodating up to six fans, including a top mount for a 240mm AIO cooler, ensuring optimal airflow and heat dissipation. It also includes a comprehensive magnetic dust filter, which is a significant advantage for maintaining cleanliness. Meanwhile, the Rosewill chassis is equipped with two pre-installed 80mm PWM front cooling fans, providing adequate airflow for server components. However, its cooling options are limited compared to the JONSBO, which may impact performance during extensive use.
Compatibility and Expansion
In terms of compatibility and expansion, the JONSBO/JONSPLUS Z20 excels with its flexible options. It supports ATX, SFX, and SFX-L power supplies and accommodates GPUs up to 363mm in length. This versatility allows users to tailor their builds extensively. The Rosewill 3U chassis, while E-ATX compatible, offers four PCI expansion slots but is primarily designed for server configurations, which may limit gaming or high-performance build options. Thus, users looking for a customizable system might find the JONSBO a more suitable choice.
Port Connectivity
Port connectivity is another area where the JONSBO/JONSPLUS Z20 and the Rosewill 3U chassis diverge. The JONSBO is equipped with a Front IO port featuring USB 3.2 Gen1 Type-A, USB 3.2 Gen2 Type-C, and audio jacks, allowing for versatile connectivity options. This is particularly beneficial for gamers and content creators who require fast data transfer and audio capabilities. On the other hand, the Rosewill chassis provides two USB 3.0 ports, which, while functional, may not meet the demands of more modern peripherals compared to the JONSBO's offerings.
Pricing and Value
Pricing plays a significant role in the decision-making process, and the JONSBO/JONSPLUS Z20 is currently priced at $99.99, making it about 23% cheaper than the Rosewill 3U chassis, which retails for $129.99. Given its additional features like portability and better cooling options, the JONSBO offers a compelling value proposition for those on a budget. The Rosewill may appeal more to users focused on server solutions, but the price difference could deter casual users looking for a standard PC case.
User Experience and Assembly
User experience and assembly are crucial factors when choosing a PC case. The JONSBO/JONSPLUS Z20 is designed to simplify the building process, featuring a removable PCI-E fixing piece that enhances the installation of longer GPUs. With its compact size, it is also easier to fit into tighter spaces. Conversely, the Rosewill chassis is designed for more extensive setups but may require more time and effort for assembly due to its larger size and server orientation. Users looking for a quick and straightforward build may prefer the JONSBO for its user-friendly design.
Aesthetics and Style
Aesthetics can be a deciding factor for many PC builders, and the JONSBO/JONSPLUS Z20 stands out with its sleek black finish and modern design elements, making it a visually appealing choice for desktop setups. The detachable carrying handle adds a unique touch, enhancing its aesthetic while providing functionality. In contrast, the Rosewill 3U chassis, while practical, adopts a more utilitarian design with a silver and black finish that may not appeal to users looking for a stylish addition to their workspace. Users prioritizing aesthetics may lean towards the JONSBO for its contemporary look.
Which should you buy?
In conclusion, choosing between the JONSBO/JONSPLUS Z20 and the Rosewill 3U Server Chassis ultimately depends on your specific needs. The JONSBO offers superior portability, a user-friendly design, and greater value at $99.99, making it an excellent choice for gamers and general users looking for a high-performance micro-ATX case. Conversely, if your focus is on a robust server solution with ample storage capacity, the Rosewill chassis, priced at $129.99, may be the better option, albeit at a higher cost. Assess your requirements carefully to determine which case aligns best with your build goals.

