Gigabyte X870 Aorus Elite AX M.2 Slots: Full Setup Guide

The Gigabyte X870 Aorus Elite AX motherboard dominates 2026 builds with its robust M.2 slot configuration, supporting PCIe 5.0 speeds for blazing NVMe storage. Gamers and creators seek max throughput—this board delivers up to 5 M.2 slots without compromises.

Our detailed guide walks you through identifying slots, installation steps, BIOS tweaks, and compatibility for optimal performance. Perfect for Ryzen 9000 series CPUs, it handles multi-drive RAID arrays effortlessly. Let's dive into maximizing your X870's potential.

Overview of M.2 Slots on X870 Aorus Elite AX

Boasts 5x M.2 slots: 2x PCIe 5.0 x4 (CPU-direct), 2x PCIe 4.0 x4 (chipset), 1x PCIe 3.0 x2. Thermal guards prevent throttling during heavy loads.

  • Slot M2A_CPU: PCIe 5.0/4.0 x4
  • Slot M2B_CPU: PCIe 5.0 x4 direct
  • Chipset slots share bandwidth smartly

Step 1: Preparing for Installation

Gather tools and check compatibility. Ensure SSDs match slot specs to avoid bifurcation issues.

  • 1. Verify SSD form factor (2280/22110)
  • 2. Update BIOS to latest F3e (2026 version)
  • 3. Apply thermal pads if needed

Step 2: Installing M.2 Drives

Power off, locate slots near CPU/VRM. Secure with screws and heatsinks provided.

  • 1. Remove pre-installed heatsink
  • 2. Insert at 30-degree angle, press down
  • 3. Fasten screw, reattach cooler

Step 3: BIOS Configuration

Enter BIOS (Del key), enable Resizable BAR and PCIe modes for full speed.

  • 1. Boot > CSM Support > Disabled
  • 2. M.I.T. > PCIe slot settings > Gen5
  • 3. Save and test with CrystalDiskMark

Step 4: RAID and Optimization

Set up RAID 0/1 for speed/redundancy using Intel RST or AMD RAID utility.

  • 1. Install RAID drivers pre-OS
  • 2. Format in Disk Management
  • 3. Monitor temps with HWInfo

Troubleshooting Common Issues

Boot loops? Check lane sharing with GPU. Update chipset drivers from Gigabyte site.

  • Clear CMOS if unstable
  • Disable unused SATA for bandwidth
  • Firmware update SSDs

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