ROG Strix Z390-E Gaming M.2 Slots Full List
The ASUS ROG Strix Z390-E Gaming remains a solid choice in 2026 for budget 9th-gen Intel builds, especially its M.2 slot configuration. This listicle details every M.2 slot available, their specs, compatibility, and upgrade paths for modern SSDs.
M.2 Slot 1: Primary PCIe 3.0 x4
Top slot for boot drive, up to 32Gb/s. Supports NVMe.
- Max size: 22110
- Heatsink: Included
M.2 Slot 2: Secondary PCIe 3.0 x4
Ideal for games, shared lanes with SATA.
- Speed: 32Gb/s
- Compatible: WD Black SN850
M.2 Slot 3: PCIe x4 / SATA Mode
Versatile for storage expansion.
- Switch in BIOS
- RAID support
M.2 Slot 4: Bottom PCIe x2
For additional SSDs, lower speed.
- Max: 16Gb/s
- Tip: Use for cold storage
Total M.2 Capacity and Tips
4 slots total, up to 16TB combined.
- Upgrade: BIOS mod for PCIe 4.0
Compatibility List 2026
Approved SSDs tested.
- Samsung 970 EVO
- Sabrent Rocket