1.Overview
The Rosewill CULLINAN MX-Blue is an ATX Mid Tower gaming PC computer case designed for optimal airflow and component visibility. It features three sides of tempered glass, pre-installed blue LED fans, and extensive support for liquid cooling radiators. This manual provides detailed instructions for setting up, operating, and maintaining your computer case.

Figure 1: Rosewill CULLINAN MX-Blue ATX Mid Tower Gaming PC Computer Case.
2. Funktioner
- Tempered Glass Design: Features 3 sides of sleek and sturdy tempered glass on the front and both sides to showcase hardware and internal components.
- Optimeret køling: Excellent airflow from 4 pre-installed 120mm blue LED cooling fans (3 front, 1 rear). Supports up to 2 additional 140mm fans on top or 6 total 120mm case fans.
- Radiatorstøtte: Optional 360mm radiator liquid cooling support in the front and 280mm radiator clearance on top.
- PSU kappe: Customizable and ventilated PSU shroud basement supports 3 x 80mm fans to promote heat dissipation.
- Komponentafstand: Supports up to 170mm tall CPU cooler and up to 360mm long VGA card.
- Støvfiltre: Includes top and bottom dust filters for easy maintenance.

Figure 2: Optimized cooling diagram illustrating airflow paths within the case.
3. Specifikationer
| Kategori | Specifikation |
|---|---|
| Type | ATX Midtårn |
| Farve | Black / CULLINAN MX Blue |
| Etui materiale | Steel / Plastic / Tempered Glass |
| Bundkort kompatibilitet | Micro ATX / ATX / Mini-ITX |
| External 5.25" Drive Bays | Ingen |
| Interne 3.5" drevbåse | 4 (0) |
| Interne 2.5" drevbåse | 5 (9) |
| Udvidelsesslots | 7 |
| Forudinstallerede ventilatorer | 3 x 120mm Blue LED (Front), 1 x 120mm Blue LED (Rear) |
| Max GPU Length Allowance | 360 mm |
| Max CPU Cooler Height Allowance | 170 mm |
| Dimensioner (H x B x D) | 18.98 cm x 8.85 cm x 17.13 cm |
| Vægt | 20.28 lbs. |
| I/O-porte | 2 x USB 3.0, 2 x USB 2.0, HD Audio In/Out, Fan Speed Control |

Figure 3: Case dimensions (Height: 482mm/19in, Width: 225mm/8.86in, Depth: 429mm/16.91in).
4. Opsætning
Follow these steps to set up your Rosewill CULLINAN MX-Blue PC case and install your components:
- Pak ud og undersøg: Tag forsigtigt etuiet ud af emballagen. Undersøg det for eventuelle skader under forsendelsen.
- Fjern sidepaneler: Unscrew the large, thick screws on the tempered glass side panels and carefully remove them. Place them on a soft, flat surface to prevent scratches.
- Remove Front Panel (for cleaning/access): The front tempered glass panel can be removed by pulling it firmly from the bottom edge. There is a small gap at the bottom to insert your fingers. This provides access to the front dust filter and pre-installed fans.
- Installer bundkort: Install the necessary standoffs for your motherboard size (Micro ATX, ATX, Mini-ITX). Carefully place your motherboard into the case and secure it with screws.
- Installer lagerdrev:
- For 3.5" HDDs: Utilize the pull-out trays located in the PSU shroud basement.
- For 2.5" SSDs: Mount them in the dedicated slots on the back of the motherboard tray.
- Installer strømforsyning (PSU): Install your power supply unit in the dedicated compartment at the bottom rear of the case. Ensure proper orientation for airflow.
- Install Expansion Cards (GPU, etc.): Remove the necessary expansion slot covers and install your graphics card or other PCIe cards. Secure them with screws.
- Kabelstyring: Brug den ample space behind the motherboard tray and the various cutouts for efficient cable routing. This helps improve airflow and aesthetics.
- Tilslut front I/O-kabler: Connect the front panel cables (USB 3.0, USB 2.0, HD Audio, Power, Reset, LED) to their corresponding headers on your motherboard. Note: Ensure your motherboard has an on-board USB 3.0 socket.
- Genmonter paneler: Once all components are installed and cables are managed, carefully reattach the front and side tempered glass panels.

Figur 4: Foran og bagpå views of the case, showing panel access points.

Figur 5: Bageste interiør view highlighting cable management options.
5. Betjening
The Rosewill CULLINAN MX-Blue case provides convenient front I/O ports for easy access and control.

Figure 6: Top I/O panel with labeled ports and controls.
- Power knap: Tryk for at tænde eller slukke computeren.
- Nulstil knap: Tryk på for at genstarte computeren.
- USB 3.0-porte (x2): Til højhastigheds dataoverførsel med kompatible enheder.
- USB 2.0-porte (x2): Til standard USB-enheder.
- HD Audio In/Out: Connect your headphones and microphone.
- Blæserhastighedskontrol: Use the fan speed switch (labeled L-S-H) to adjust the speed of the pre-installed fans. 'L' for Low, 'S' for Standard, 'H' for High. This also controls the fan LED lights.
6. Vedligeholdelse
Regelmæssig vedligeholdelse er med til at sikre optimal ydeevne og levetid for dine pc-komponenter.
- Rengøring af støvfilter: The case is equipped with magnetic dust filters on the top and bottom, and a removable filter behind the front panel. Regularly remove and clean these filters to prevent dust buildup inside the case.
- Top and Bottom Filters: Easily slide out for cleaning.
- Frontfilter: Remove the front tempered glass panel (as described in Setup section 4.3) to access the magnetic front filter.
- Rengøring af hærdet glas: Use a soft, lint-free cloth and a non-abrasive glass cleaner to clean the tempered glass panels. Avoid harsh chemicals that may damage the surface.
- Indvendig rengøring: Periodically use compressed air to blow out dust from internal components and fans. Ensure the system is powered off and unplugged before cleaning.
7. Fejlfinding
If you encounter issues with your Rosewill CULLINAN MX-Blue case, consider the following common troubleshooting steps:
- Fans Not Spinning / LEDs Off:
- Check the fan speed control switch on the top I/O panel. Ensure it is not set to 'L' (Low) if you expect full speed or 'S' (Standard) if you expect LEDs to be on (some modes might turn off LEDs).
- Verify that the pre-installed fans are correctly connected to the fan hub/controller inside the case, and that the fan hub is powered and connected to the motherboard.
- Forreste USB-porte virker ikke:
- Ensure the USB 3.0 and USB 2.0 headers from the front panel are securely connected to the correct ports on your motherboard.
- Check your motherboard's manual for the correct header locations and ensure your motherboard supports the necessary USB 3.0 socket.
- No Power / System Not Booting:
- Verify that the power button cable from the front panel is correctly connected to the "Power SW" pins on your motherboard's front panel header.
- Ensure your Power Supply Unit (PSU) is properly installed, connected to all components, and switched on.
- Confirm all internal components (motherboard, CPU, GPU, RAM) are correctly seated and powered.
For more complex issues, consult your motherboard and component manuals, or contact Rosewill customer support.
8. Garanti og support
For detailed warranty information and technical support, please refer to the official Rosewill resources:
- Officiel brugermanual (PDF): For comprehensive instructions and diagrams, you can download the official PDF user manual her.
- Rosewill Support: Besøg den officielle Rosewill website or their Amazon store for product support, FAQs, and contact information: Rosewill Store on Amazon.





