MSI B650 Gaming Plus WiFi M2 Slots Guide

The MSI B650 Gaming Plus WiFi motherboard boasts advanced M.2 slots for 2026 gaming rigs. With PCIe 5.0 support, it's perfect for SSD-heavy builds.

This detailed guide covers slot specs, installation, and optimization.

M.2 Slot Overview

Four slots total.
  • Slot 1: PCIe 5.0 x4 (CPU)
  • Slot 2: PCIe 4.0 x4 (Chipset)
  • Slot 3/4: PCIe 4.0 x4

Step 1: Check Compatibility

Match your SSDs.
  • 1. Verify NVMe PCIe gen
  • 2. Use MSI manual p.45
  • 3. Avoid sharing lanes

Step 2: Installing M.2 Drives

Hands-on.
  • 1. Power off PC
  • 2. Remove cooler if needed
  • 3. Insert at 30° angle
  • 4. Secure screw

BIOS Configuration

Optimize speeds.
  • 1. Enter BIOS (Del)
  • 2. Enable Resizable BAR
  • 3. Set M.2 to PCIe mode

Cooling M.2 Slots

Prevent throttling.
  • Use included heatsinks
  • Add active cooler for slot 1

Performance Benchmarks 2026

Tested with WD Black SN850X.
  • Read: 7,000 MB/s
  • Boot: 5s

Troubleshooting Common Issues

Fix problems.
  • No detect: Reseat
  • Slow: Update BIOS

Frequently Asked Questions

How many M.2 slots on MSI B650?

Four: 1x PCIe 5.0, 3x PCIe 4.0.

Does WiFi affect M.2 slots?

No, WiFi uses separate PCIe lane.

PCIe 5.0 SSD required?

Backward compatible; PCIe 4.0 works fine.

Max storage capacity?

Up to 8TB per slot supported.

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