: Contains SCI USB2Serial, Android ADB, and Fastboot drivers in a single package.
While specific version numbering varies by tool release (e.g., SPD Research Tool, Miracle Box), drivers in the R4xx range are generally older, legacy drivers. They are typically used for: spd driver r420 download repack
If you need the (e.g., for a Samsung R420 printer or other device), I strongly recommend downloading it only from: : Contains SCI USB2Serial, Android ADB, and Fastboot
A "repack" usually means a third-party, unofficial modification of the original driver installer [1]. : Contains SCI USB2Serial