Here you can download a4 tech 638ma driver win7 for Windows. It's 100% safe, uploaded from safe source and passed Eset virus scan!
Driver Info:
File name: a4-tech-638ma_drv-win7.exe
Driver version: 2.0.4
File size: 2 727 KB
OS: Win XP, Win Vista, Windows 7, Windows 153
Upload source: original install disk
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