Older Sony firmware relied on Media Transfer Protocol (MTP). Opening Windows Media Player can sometimes trigger the system to properly "mount" the device. Official Software for the NWZ-E453
: Open "This PC" or "File Explorer," find the WALKMAN drive, and drag MP3 files into the MUSIC folder. Mac : You can use the Content Transfer software i--- Sony Walkman Nwz-e453 Driver Download
This means it is designed to use the generic USB drivers already built into Windows and macOS. When you plug the device into a USB port, your computer should automatically treat it like a thumb drive or external hard drive. Why Your Computer Isn't Recognizing the Walkman Older Sony firmware relied on Media Transfer Protocol (MTP)
Instead of a raw .inf driver, Sony provided driver functionality through software: " find the WALKMAN drive