Most solid state drives (SSDs) report their logical block address size as 512 bytes , even though they use larger blocks physically - typically 4 KiB, 8 KiB, or sometimes larger.
Newer HDDs and SSDs use 4096 byte (4 KiB) sectors, which are known as the Advanced Format (AF). The sector is the minimum storage unit of a hard drive. Most ... History · Related units · Sectors versus clusters · Zone bit recording