MR14 (Micro SDHC Card to Mini PCIe adapter) Micro SDHC card capacity: Up to 32G Extreme high speed: Transfer files up to 25MB/sec. 50MHz(max)/4bit for SDHC. USB 2.0 based PCI Express Half-Mini Card design, suitable for any PCI Express Mini Card slot. Micro SD/SDHC/SDXC Card