Silicon Motion SM3280AA is not a standalone consumer "memory bar" (like a RAM stick) but rather a USB 3.2 Gen1 flash drive controller
Tools like ChipGenius can confirm your exact controller version. sm3280aa memory bar
The SM3280AA Memory Bar is a term primarily used to describe a high-performance USB storage device built around the Silicon Motion SM3280AA controller. While "memory bar" is sometimes used colloquially for stick-style USB drives, in technical circles, it often refers specifically to the generic identifying name a computer displays when a drive's firmware is corrupted or the device is in a factory "test mode". Technical Specifications & Features Silicon Motion SM3280AA is not a standalone consumer
| Parameter | Specification | |--------------------|--------------------------------------| | Host interface | USB 3.1 Gen 1 (backward compatible with USB 2.0) | | NAND channels | 1 (single channel) | | NAND CE pins | Up to 4 | | Flash protocols | Toggle DDR / ONFI | | ECC engine | Hardware BCH + LDPC (up to 2KB code length) | | Supported NAND | 2D/3D TLC, 3D QLC (e.g., Micron, Kioxia, SK hynix, YMTC) | | Max capacity | 1 TB (common) – 2 TB possible | | Sequential read | Up to 400 MB/s (depending on NAND) | | Sequential write | Up to 200 MB/s (depending on NAND) | | Package | 48-pin QFN / 52-pin QFN (variant) | Technical Specifications & Features 2
Buy from authorized distributors or direct from the manufacturer to ensure genuine parts and warranty support. Check the manufacturer’s product lifecycle and obsolescence notices—embedded customers often require long-term availability guarantees.