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Description
Cooler Master MasterBox 520 Mesh Case, Black, Mid Tower, 1 x USB 3.2 Gen 1 Type-A, 1 x USB 3.2 Gen 2 Type-C, Tempered Glass Side Window Panel, FineMesh Performance Front Panel, 3 x CF120 Addressable RGB Fans Included with ARGB & Fan HubMASTERBOX 520 MESH REACHING NEW BRIGHTS MasterBox 520 Mesh is the ideal chassis for satisfying the needs of both novice and experienced gamers. FineMesh Performance Front Panel Three CF120 ARGB Fans Included ARGB Controller Included Removable Top Panel Screwless & Tool Free TG Side Panel Removable HDD cage FINEMESH PERFORMANCE FRONT PANEL Large mesh intakes offer unrestricted airflow and stellar thermals for demanding systems. AVAILABLE IN BOTH BLACK
MASTERBOX 520 MESHREACHING NEW BRIGHTS
MasterBox 520 Mesh is the ideal chassis for satisfying the needs of both novice and experienced gamers.
- FineMesh Performance Front Panel
- Three CF120 ARGB Fans Included
- ARGB Controller Included
- Removable Top Panel
- Screwless & Tool-Free TG Side Panel
- Removable HDD cage
FINEMESH PERFORMANCE FRONT PANEL
Large mesh intakes offer unrestricted airflow and stellar thermals for demanding systems.
AVAILABLE IN BOTH BLACK & WHITE COLORATIONS
MasterBox 520 Mesh is available in both black and white so you can choose the color that best matches your setup!
THREE CF120 ARGB FANS INCLUDED
Pre-installed CF120 ARGB fans provide ample airflow, ensuring low temperatures, high performance, and eye-catching aesthetics during even the most intense gaming sessions.
REMOVABLE TOP PANEL
The top panel is entirely removable for improved access and easy installation of cooling solutions such as fans and radiators.
SCREWLESS & TOOL-FREE TG SIDE PANEL
The tempered glass side panel is secured with pins for easy removal, facilitating quick, easy installation.
VERSATILE COOLING OPTIONS
Supports up to seven 120mm fans and dual 360mam radiators on the top and front panel.
(RE)MOVABLE HDD CAGE
The HDD cage is completely (re)movable for improved access during assembly and system upgrades.
ARGB/FAN HUB INCLUDED
The included controller allows users to manage systems lighting independently from the hardware configuration and provides the user with 4 additional fan headers in case of need.
UPGRADED REMOVABLE DUST FILTER BRACKET
The bottom dust filter bracket is robust and locked sturdily in place during travel, remaining easy to remove for cleaning purposes.
RICH CONNECTIVITY
The I/O panel comes with a USB 3.2 (Gen 2) Type-C port, a USB 3.2 (Gen 1) Type-A port, and one 3.5mm (audio + mic) headset jack.
BREATHABLE POWER SUPPLY SHROUD
The ventilated PSU cover supports both active and passive cooled PSUs installed in multiple orientations.
HARDWARE COMPATIBILITY
MasterBox 520 Mesh is natively compatible with ITX, M-ATX and ATX motherboards.
E-ATX motherboards, such as SSI-CEB models, are compatible with dimensions up to 12" x 10.7".
Model Number
MB520-KGNN-S00
Form Factor
Mid Tower
Colour
Black
Materials
Mesh
Steel
ABS Plastic
Tempered Glass
Motherboard Support
E-ATX*
SSI CEB
ATX
Micro ATX
Mini ITX
(*up to 12" x 10.7" motherboards, may impact cable management feature)
Expansion
Slots: 7
Drive Bays
3.5" Drive Bays: 2
2.5" Drive Bays: 3
I/O Panel
1 x USB 3.2 Gen 1 Type-A
1 x USB 3.2 Gen 2 Type-C
1 x 3.5mm Headset Jack (Audio+Mic)
1 x Reset/ARGB button
Included Accessories
ARGB Fans Hub
Fan Support
Top: 3 x 120mm / 2 x 140mm
Front: 3 x 120mm / 2 x 140mm (3 x CF120 ARGB Fans Included)
Rear: 1 x 120mm
Radiator Support
Top: 120mm / 140mm / 240mm / 280mm / 360mm (recommended maximum thickness -55mm)
Front: 120mm / 140mm / 240mm / 280mm / 360mm
Rear: 120mm
Clearance
CPU Cooler: 165mm
PSU: 200mm (Recommended up to 170mm)
GFX: 410mm
Dust Filters
Bottom
Front
Top
Power Supply Support
ATX
Dimensions ( L x W x H )
502 x 210 x 498mm (Incl. Protrusions)
443 x 210 x 498mm (Body Size)
Volume
50L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Baby bumps and bodyguards
Format: Kindle
Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat.
It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic.
I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop.
One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
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Reviewed in the United States on March 16, 2024
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
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Reviewed in the United States on September 9, 2024