Dual-Protocol SSD Expansion: M-Key Slot: PCIe NVMe/AHCI SSD (Lower Port, PCIe 3.0 x4); B-Key Slot: SATA SSD (Upper Port, Requires SATA Cable to Motherboard*). Critical Note: Simultaneous use of both ports requires SATA data/power connection for B-Key SSD. No hot-swap support to avoid data loss.
Plug-and-Play Installation: Tool-free mounting with adjustable spacers for 2230/2242/2260/2280 drives. Includes full-height & low-profile brackets for tower/mini-ITX cases. No drivers neededautomatic detection in BIOS/UEFI within 15 seconds.
Legacy PCIe Backward Compatibility: Auto-negotiation: Works on PCIe 1.0/2.0 slots (x4/x8/x16) with bandwidth downshift. BIOS Precheck: Ensure motherboard supports PCIe bifurcation if using NVMe+AHCI combo.
Latency-Optimized Performance: NVMe Priority: Dedicated PCIe 3.0 x4 lanes deliver 3,940MB/s* sequential read; SATA Limitation: B-Key port capped at SATA III 6Gbps (550MB/s) via cable link. Theoretical max speed with PCIe 3.0 x4 SSD.
Anti-Vibration Durability: Steel-reinforced M.2 slots prevent SSD flex under shock/vibration. Anodized aluminum heatsink base reduces thermal throttling risk.
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Overview
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M.2 NVMe Adapter M-Key and B-Key, 2-Port M.2 to PCIe X4 Gen3 Adapter Card, Supports PCIe M.2 SSDs (NVMe and AHCI) and SATA-based SSDs, Compatible with PCIe 3.0/2.0/1.0 Motherboards
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First Listed on Newegg
November 10, 2025
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