Smi Sm3271ac1 May 2026

's performance is inferior to specialized USB 3.2 Gen 2 or SSD-based USB drives, particularly in random write speeds. Conclusion The SMI SM3271AC1

SM3271AC1, SM3271L, SM3271AB (variants)

The is a USB 2.0 NAND flash controller IC (Integrated Circuit) produced by Silicon Motion, a Taiwanese company founded in 1995. While SMI produces high-end PCIe NVMe SSD controllers (like the SM2262EN), the SM3271 series belongs to their legacy USB controller family. smi sm3271ac1