--- product_id: 59059637 title: "Cooler Master Q300L V1 Micro-ATX PC Case, High Airflow, Transparent Panel | 360mm Graphics Card Support, 240mm AIO Support, Micro-ATX Motherboard, Magnetic Dust Filters, Modular I/O Panel" brand: "cooler master" price: "€ 117.98" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.ie/products/59059637-cooler-master-q300l-v1-micro-atx-pc-case-high-airflow store_origin: IE region: Ireland --- # Magnetic dust filters for clean airflow 240mm liquid cooler & 5 fans max Supports Micro-ATX & Mini-ITX boards Cooler Master Q300L V1 Micro-ATX PC Case, High Airflow, Transparent Panel | 360mm Graphics Card Support, 240mm AIO Support, Micro-ATX Motherboard, Magnetic Dust Filters, Modular I/O Panel **Brand:** cooler master **Price:** € 117.98 **Availability:** ✅ In Stock ## Summary > 🧊 Cool, Compact, and Customizable — The Q300L Means Business ## Quick Answers - **What is this?** Cooler Master Q300L V1 Micro-ATX PC Case, High Airflow, Transparent Panel | 360mm Graphics Card Support, 240mm AIO Support, Micro-ATX Motherboard, Magnetic Dust Filters, Modular I/O Panel by cooler master - **How much does it cost?** € 117.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/59059637-cooler-master-q300l-v1-micro-atx-pc-case-high-airflow) ## Best For - cooler master enthusiasts ## Why This Product - Trusted cooler master brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean & Cool Always:** Magnetic dust filters with unique pattern keep your system pristine and airflow optimized. - • **Showcase Your Build:** Edge-to-edge transparent panel puts your custom rig on full display. - • **Spacious Yet Compact:** Fits GPUs up to 360mm and CPU coolers up to 159mm in a sleek micro-ATX frame. - • **Modular I/O, Your Way:** Six adjustable I/O panel positions for ultimate setup flexibility. - • **Unmatched Cooling Power:** Supports up to 240mm AIO liquid cooling and five fans for peak thermal performance. ## Overview The Cooler Master Q300L V1 is a micro-ATX PC case engineered for professionals who demand high airflow and modularity in a compact design. It supports large GPUs up to 360mm, CPU coolers up to 159mm, and 240mm liquid cooling setups, all while offering six configurable I/O panel positions and magnetic dust filters. Its transparent side panel and perforated design ensure your build looks as good as it performs, making it the perfect choice for stylish, high-performance office or home setups. ## Description The Master Box Q300L is your straightforward option in the lineup of the brand new Master Box Series from Cooler Master. A Series that might be small in size but excels in functionality and modularity without compromising on the thermal performance. Although the size wouldn't tell, the Master Box Q300L supports a standard ATX PSU which we don't see often in the market with this size. Based on the different system setup, the I/O panel can be adjusted to six different locations, three options at each side of the case. You can decide which setup fits your system best. Due to the cube design of the frame and special pattern design on the magnetic dust filter will make the chassis stand out from the rest. The combination of a practical design and the unique customizable outlook makes the Master Box Q300L The perfect choice for office and home. ## Features - Ample Interior: Explore ample interior space for Micro-ATX or Mini-ITX motherboards, ensuring easy and future expansion - Components Clearance: Accommodates CPU coolers with a max height of 159mm, GPU cards up to 360mm, and PSU up to 160mm in length. - Versatile Cooling: Maximize cooling performance with a 240mm liquid cooler and 5 fans. - Modular I/O Panel: You have the flexibility to adjust its position at the front, top, or bottom on both sides - Edge-To-Edge Panel: Show off your meticulous build through the transparent side panel with pride. - Open Thermal Design: The perforated design on all sides promotes optimal airflow and heat dissipation - Magnetic Dust Filters: The unique pattern of the dust filter adds a distinctive appearance to the case. ## Technical Specifications | Specification | Value | |---------------|-------| | Antenna Location | Gaming | | Asin | B0785GRMPG | | Best Sellers Rank | #2 in Computer Cases | | Brand | Cooler Master | | Built In Media | 1 computer case | | Case Type | Mini-Tower | | Color | Dark Gray | | Compatible Devices | Micro-ATX and Mini-ITX motherboards, Cooler Master devices | | Cooling Method | Air | | Customer Reviews | 4.5 4.5 out of 5 stars (14,003) 4.5 out of 5 stars | | Enclosure Material | Alloy Steel, Plastic | | Global Trade Identification Number | 00884102038006, 00884102095313, 04719512065488 | | Hard Disk Form Factor | 3.5 inches | | Internal Bays Quantity | 1 | | Item Dimensions D X W X H | 15.39"D x 9.06"W x 15"H | | Item Type Name | grocery | | Item Weight | 480 g | | Manufacturer | Cooler Master | | Mfr Part Number | MCB-Q300L-KANN-S00 | | Model Name | Q300L | | Model Number | MCB-Q300L-KANN-S00 | | Number Of Fans | 3 | | Number Of Items | 1 | | Other Special Features Of The Product | Accomodates CPU Coolers, Adjustable, Dust Filter, Edge-To-Edge Panel, Fully Ventilated | | Power Supply Maximum Output | 500 watts | | Power Supply Mounting Type | Bottom Mount | | Supported Motherboard | Micro-ATX and Mini-ITX | | Total Expansion Slots Quantity | 4 | | Total Usb 3 0 Ports | 2 | | Total Usb Ports | 2 | | Upc | 884102095313 884102038006 | | Warranty Description | 2 | ## Product Details - **Brand:** Cooler Master - **Case Type:** Mini-Tower - **Color:** Dark Gray - **Cooling Method:** Air - **Item Weight:** 480 g - **Material:** Alloy Steel, Plastic - **Model Name:** Q300L - **Motherboard Compatability:** Micro-ATX and Mini-ITX - **Power Supply Mounting Type:** Bottom Mount - **Recommended Uses For Product:** Gaming ## Images ![Cooler Master Q300L V1 Micro-ATX PC Case, High Airflow, Transparent Panel | 360mm Graphics Card Support, 240mm AIO Support, Micro-ATX Motherboard, Magnetic Dust Filters, Modular I/O Panel - Image 1](https://m.media-amazon.com/images/I/91UOdM9izhL.jpg) ## Available Options This product comes in different **Color, Style** options. ## Questions & Answers **Q: Is this case wide enough to support a cooler master hyper 212 evo?** A: I know what the official CM specs are, but I think it will fit. This guy installed a taller cooler with its cover and it fit. https://www.vortez.net/articles_pages/cooler_master_masterbox_q300l_review,8.html **Q: I've seen photos of the handle (from a Q300P) being attached to the center of the top panel of this case. Is this possible?** A: You can remove the plastic bit that has the cooler master logo on it and install handles on the case like the Q300P **Q: what are the size and placements of the fans?** A: There are 3 fans (120mm) in total. 1 exhaust fan in the rear, and 2 intake fans at the front. -CM Myke **Q: Does the case come pre-assembled?** A: Hello Kevin, The case does come assembled, but you will need to plug in the connectors, and open it up to install your components. CM-PNguyen ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great purchase!!! *by on Reviewed in the United States August 10, 2026* Great quality, great layout for cable management, excellent design, comes with all the hardware and tools you'll need except a basic screwdriver. I was able to fit everything I wanted in there despite the smaller size and it looks great! Great airflow, everything comes apart for easy install, and the 3 mesh panels keep cat hair out. 10/10 a must-buy. ### ⭐⭐⭐⭐⭐ Great case for mid-range builds- add good fans, and don't overdo though. *by on Reviewed in the United States August 2, 2026* Very good case for mid-range builds- don't ask too much from it though. Size is excellent for mATX, fits full ATX PSU. Respectable cable management. While the case technically can fit large, 3 fan vid cards, I advise sticking to smaller 2 fan GPU's to keep the insides clean and roomy for airflow. People complain about the airflow, but I have no trouble at all keeping my build running cool on air cooling alone, using 3 high static pressure intake fans combined with 3 high airflow exhaust fans (do not use the stock exhaust fan) and make sure the case is high positive pressure balanced. Ryzen 5500 on stock cooler, RX5700 gpu runs temps in the 60's under medium 1080p gaming loads. Very good price. Just don't try to build a super-computer in this case, and it works great. ### ⭐⭐⭐⭐ Good for a budget case, but the magnetic screens are annoying! *by on Reviewed in the United States July 25, 2026* If you are looking for a cheap, functional chassis to put together a budget build or an AI box, this case delivers strong performance for the price. The all-black exterior and interior look clean, the airflow is surprisingly solid, and all the included mounting hardware matches the sleek black look. It gets the job done for lower-end setups without breaking the bank.However, a few design choices create unnecessary friction while working on or moving the system.The interior is completely black, which sounds great visually, but it makes cable routing and component alignment remarkably frustrating. Unless you are building inside a bright, well-lit room, seeing small headers or threading cables through the dark cutouts takes extra effort.Another annoyance is the PCI expansion slot retention bracket on the back. Instead of allowing you to unscrew individual expansion slots to swap or clean a GPU, you have to undo a massive back plate to access any of the card slots. While it gives total access once off, it forces you to turn far too many screws just to service a single card.Finally, the magnetic dust filters are a double-edged sword. Being able to peel them off in one second for cleaning is convenient, but the magnets are too weak. The filters slide out of place every time you shift the case around, and pets can effortlessly hook a claw underneath the edges and pull them completely off.Pros and ConsPros:Excellent value for a budget-friendly PC buildSolid airflow performance considering the price pointSleek aesthetic with matching black screws and hardwareCons:All-black interior makes it very dark and difficult to route cables without bright room lightingPCI back plate setup requires removing a large bracket rather than individual component screwsMagnetic dust filters shift out of place too easily and pull off with minimal forceFinal Verdict:This is a solid, cost-effective choice for lower-end systems, and I would use it again for budget projects. Just be prepared for a dark working space during assem ## Frequently Bought Together - Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated Airflow, Black (MCB-Q300L-KANN-S00) - AMD Ryzen 5 5500 6-Core, 12-Thread Unlocked Desktop Processor with Wraith Stealth Cooler - Thermaltake Smart 500W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Cooling Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0500NPCWUS-W --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/59059637-cooler-master-q300l-v1-micro-atx-pc-case-high-airflow](https://www.desertcart.ie/products/59059637-cooler-master-q300l-v1-micro-atx-pc-case-high-airflow) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-08-15*