MSI MPG GUNGNIR 300R AIRFLOW MPG Series PC Case Instructions

MPG Series

PC Case

MPG GUNGNIR 300R AIRFLOW
MPG GUNGNIR 300P AIRFLOW
MPG GUNGNIR 300R AIRFLOW WHITE
MPG GUNGNIR 300P AIRFLOW LITE

User Guide

Specifications

Comparison of Key Differences

Product Name| MPG GUNGNIR 300R AIRFLOW| MPG GUNGNIR 300R AIRFLOW WHITE| MPG GUNGNIR 300P AIRFLOW| MPG GUNGNIR 300P AIRFLOW LITE
---|---|---|---|---
Color| Black| White| Black| Black
Fan Configuration| Front: 3 x 120mm PWM ARGB Fans

Rear: 1 x 120mm PWM ARGB Fan

| Front: 3 x 120mm PWM ARGB Fans

Rear: 1 x 120mm PWM ARGB Fan

| Front: 3 x 120mm PWM Fans (non-ARGB)

Rear: 1 x 120mm PWM Fan (non-ARGB)

| Front: 3 x 120mm PWM Fans (non-ARGB)

Rear: 1 x 120mm PWM Fan (non-ARGB)

LED Switch Button| Yes| Yes| No| No
Horizontal GPU Bracket| Pre-installed| Pre-installed| Included in accessory box| Included in accessory box
Vertical GPU Bracket| Included in accessory box| Included in accessory box| Pre-installed| Pre-installed
PCIe4.0x16 Riser Cable| Not included| Not included| Pre-installed| Not included

Basic Information

• EATX up to 280 x 305mm (12”x10.9”)

Cooling Fan Support

• Pre-installed with an 80 mm fan in the 300P series.

Vertical GPU Bracket| 2 x 60mm** (thickness: 15mm)

** pre-installed in the 300P series.

Expansion Slots

• 6015 fans are optional for 300R and pre-installed for 300P.

Drive Bays

2.5″ SSD| 4 (up to 8)*

• Only supports up to 7 when using EATX motherboard

---|---
Combo 3.5″/2.5″| 2

I/O Ports and Buttons

(300R)

Chassis Clearances

360mm (GPU holder installed at right front)
340mm (GPU holder installed at right rear)300P series:
338mm (GPU holder installed at right front or right rear) After removing the pre-installed 80mm fan, the maximum GPU length of the 300P series is the same as that of the 300R series
Maximum GPU Width| 142mm (Horizontal installed)

150mm (Vertical installed)

Maximum GPU Thickness| 80mm
Radiator Support| Front: 360mm, Top: 360mm, Rear: 140mm
PSU Support| Above 220mm

Materials

• Removable for easy cleaning, with Ø1mm mesh holes that do not require a dust filter.

Top Bezel**| Metal

** Non-removable for airflow optimization

Dust Filter| Top: Magnetic filter

Side: Magnetic filter

Bottom: Plastic pull-out filter

Accessories (300R)

Item

| Name / Q’ty| Used for
---|---|---
| Cable ties

x10

|

Cable management

| L-shaped Screwdriver

x1

| Securing vertical graphics card & bracket
| Screw M3 5mm

x35

|

Motherboard / SSD / PCIe riser cable

| Screw #6-32 6mm

x4

| Securing PSU
| Screw #6-32 6mm

x4

|

Securing HDD

| Screw #6-32 7.5mm

x8

| Securing liquid cooling radiator
| Screw #6-32 30mm

x12

|

Securing liquid cooling radiator fan

| Stand-off #6-32 6.5mm

x2

| PCIe riser cable stand
| Stand-off Mounting Tool

x 1

|

Securing motherboard / PCIe riser cable

| Vertical graphics card bracket

x1

| Securing vertical graphics card
| 80mm/120mm fan mounting kit x1

(Bracket x1, Screw Ø5 8mm x4, Screw Ø9.5 14.5mm x2)

|

Securing 80mm/120mm fan

Accessories (300P)

Item

| Name / Q’ty| Used for
---|---|---
| Cable ties

x10

|

Cable management

|

L-shaped Screwdriver

x1

| Securing vertical graphics card & bracket
| Screw M3 5mm

x35

|

Motherboard / SSD / PCIe riser cable

|

Screw #6-32 6mm

x4

| Securing PSU
| Screw #6-32 6mm

x4

|

Securing HDD

|

Screw #6-32 7.5mm

x8

| Securing liquid cooling radiator
| Screw #6-32 30mm

x12

|

Securing liquid cooling radiator fan

|

Stand-off Mounting Tool

x 1

| Securing motherboard / PCIe riser cable
| Horizontal graphics card bracket

x1

|

Securing horizontal graphics card

|

Screw Ø5 8mm

x2

|

Securing 80mm/120mm fan

Case Features (300R)

Case Features (300P)

1. MPG GUNGNIR 300P AIRFLOW LITE does not include this accessory

Side and Front View

I/O and Buttons

Side Panel Removal

Front Bezel Removal

GPU Holder Removal

Cable Cover Removal

Motherboard Installation

Horizontal Graphics Card Installation

Vertical Graphics Card Installation (1)

Vertical Graphics Card Installation (2)

SSD Installation

HDD Installation

PSU Installation

Top Panel I/O Connection

Control Board Connection

1. ARGB LED
2. ARGB connector
3. Motherboard ARGB and fan connectors
4. Fan
5. Power supply’s SATA connector
6. LED Switch button

Addressable RGB LED Strip Connection

1. ARGB connector
2. ARGB extension cable
3. ARGB strip

Addressable RGB LED Fan Connection

1. ARGB connector
2. Fan connector
3. ARGB Fan

1. ARGB
2. RGB

  IMPORTANT

• Please always turn off the power supply and unplug the power cord from the power outlet before installing or removing the ARGB LED Strip.
• Supports a maximum of 156 LEDs. Exceeding this limit may result in overheating, abnormal colors, or malfunctions.
• Only compatible with 4-pin PWM fans.
• Please ensure all cables are securely connected before powering on.

LED Effect Sequence

After pressing the LED Switch button, the LED effect sequence is as follows:

1

| Solid red
---|---

2

| Solid blue

3

| Solid yellow

4

| Solid green

5

| Solid cyan

6

| Solid orange

7

| Solid purple

8

| Solid white

9

| 8-color running effect (red, blue, yellow, green, cyan, orange, purple, white)

10

| 8-color breathing transition effect (red, blue, yellow, green, cyan, orange, purple, white)

11

| 8-color flowing effect (red, blue, yellow, green, cyan, orange, purple, white)

12

| Green fading

13

| Blue fading

14

| Red fading

15

| Dual-color running effect (red-blue, blue-yellow, yellow-green, green-cyan, cyan-orange, orange-purple, purple-white, white-red)

16

| Rainbow color cycling (Default)

Graphics Card Limitation

Horizontal GPU and GPU holder at right front Installation

• GPU Length:
  • Maximum up to 360mm (300R)
  • Maximum up to 338mm (300P)

• GPU Width (Horizontal): Maximum up to 142mm

• GPU Thickness: Maximum up to 80mm

Vertical GPU and GPU holder at right front Installation

• GPU Length:
  • Maximum up to 360mm (300R)
  • Maximum up to 338mm (300P)

• GPU Width (Vertical): Maximum up to 150mm

• GPU Thickness: Maximum up to 80mm

Horizontal GPU and GPU holder at right rear Installation

• GPU Length:
  • Maximum up to 340mm (300R)
  • Maximum up to 338mm (300P)

• GPU Width (Horizontal): Maximum up to 142mm

• GPU Thickness: Maximum up to 80mm

Vertical GPU and GPU holder at right rear Installation

• GPU Length:
  • Maximum up to 340mm (300R)
  • Maximum up to 338mm (300P)

• GPU Width (Vertical): Maximum up to 150mm

• GPU Thickness: Maximum up to 80mm

GPU Holder Installation

GPU Holder Position

GPU Holder Adjustment

GPU Support Arm Removal

Fan Compatibility and Setup

Radiator Compatibility and Setup

360mm Radiator Configuration      Push-Pull Radiator Configuration

General Information

Copyright and Trademarks Notice

Copyright © Micro-Star Int’l Co., Ltd. All rights reserved.

The MSI logo used is a registered trademark of Micro-Star Int’l Co., Ltd. All other marks and names mentioned may be trademarks of their respective owners. No warranty as to accuracy or completeness is expressed or implied. MSI reserves the right to make changes to this document without prior notice.

All text, images, illustrations, and other content in this manual are the property of MSI. No part of this manual may be reproduced, distributed, or used in any form without the written permission of MSI.

Revision History

• Version 1.0, 2023/07, First release.

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