usbperf.dll:

usbperf.dll, C:\WINDOWS\system32, C:\Windows\SysWOW64\ Microsoft Dynamic-link library

usbperf.dll ?

2. CMD
3. : regsvr32 usbperf.dll Enter

RegSvr32.exe :

Regsvr32 [/u] [/n] [/i[:cmdline]] usbperf.dll

/n -  /i
/s – 
/u - 
/i -  [cmdline];  /u, 

Snappy Driver Installer

:

:

unarc.dll ucrtbase.dll uplay_r1.dll uplay_r1_loader.dll UXTHEME.dll ubiorbitapi_r2_loader.dll ukhook40.dll USP10.dll USERENV.dll URLMON.dll uxcore.dll u212com.dll utils.dll USERDATA.dll ufmanager.dll u25azalea.dll u2fpdf.dll u2lbcode.dll u2.dll U2LCOM.dll U2FXLS.dll U2DDISK.dll U25dts.dll U2FDIF.dll U2FCR.dll U2FRTF.dll u2fxml.dll U2LSAMP1.dll u25samp1.dll U2DPOST.dll