If you are using modern Thunderbolt 3/4 SxS readers, you may need a newer driver, though it may not officially list Windows 8. Sony SxS Device Driver V3.1.0 (Sony Support)
Because "sxsi x64 windows 8 link" is such a specific query, attackers create fake installer pages targeting automation engineers. Red flags include: sxsi x64 windows 8 link
: Right-click the device, choose Update Driver Software , and opt for Browse my computer for driver software . If you are using modern Thunderbolt 3/4 SxS
: If you experience slow USB 3.0 transfer rates on Windows 8 while writing images, ensure you have applied the latest KB2756872 update : If you experience slow USB 3
Use reputable, dedicated DLL database sites that offer scanned files, such as DLL-Files.com, but ensure you select the 64-bit (x64) version and match your version of Windows 8.
Type dism /online /cleanup-image /restorehealth and press Enter. Once finished, run sfc /scannow again. 3. Alternative SxS Drivers (Newer Versions)
While the driver scenario is the most likely match for your search, "SxSI" can also refer to a few niche applications, which might explain other search results you've seen.