Cooler Master MasterBox Q300P Installation Guide

Package Contents

The following components are included in the package:

Part A: Screws (6x) ?
Part B: Screws (8x) ?
Part C: Screws (14x) ?
Part D: Screws (8x) ?
Part E: Cable Tie (1x) ?
Part F: Standoffs (10x) ?️
Part G: Motherboard Standoff Tool (1x) ?

Installation Steps

Step 1: Prepare the Case and Attach Dust Filters

Attach the magnetic dust filters to the top and bottom edges of the case frame. The front I/O module is shown being attached to the front edge of the case. Side panels are shown being attached to the case frame.

Step 2: Install Motherboard Standoffs

Place the motherboard standoffs (Part F) into the designated mounting holes on the case's motherboard tray. The tool (Part G) can assist in screwing them in.

Step 3: Install the Motherboard

Carefully align the motherboard with the installed standoffs. Secure the motherboard to the standoffs using screws (Part C).

Step 4: Install the Power Supply Unit (PSU)

Slide the Power Supply Unit (PSU) into its designated bay located at the bottom rear of the case. Secure the PSU using screws (Part D).

Step 5: Install Storage Drives (SSD/HDD)

Attach SSDs to their respective mounting brackets. Secure these brackets to the case. Attach HDDs to their respective mounting brackets. Secure these brackets to the case.

Step 6: Install Fans

Mount fans onto the designated locations on the front, rear, and top of the case.

Step 7: Install Graphics Card (GPU)

Remove the necessary expansion slot covers from the rear of the case. Insert the graphics card into the appropriate PCIe slot on the motherboard and secure it to the case.

Step 8: Connect Front Panel Cables

Connect the front panel I/O cables (e.g., power button, USB ports, audio jacks) to their corresponding headers on the motherboard.

Step 9: Install Top Panel Assembly

Attach the top panel assembly to the main structure of the case.

Step 10: Install Side Panels

Attach the tempered glass side panels to the case.

Step 11: Final Connections and Cable Management

Connect the necessary power cables from the PSU to all components. Use the provided cable ties (Part E) to organize and manage internal cables for better airflow and aesthetics. If applicable, connect the Wi-Fi antenna to the rear I/O of the motherboard.

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