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https://acer.drivercan.es/driver/4057385/
ACER Aspire 4740 1. Updates AHCI OptionROM (version: iSrc 1.20_E.0027 03232010), fixed can't boot on CD-ROM.n2. Enables EDB(Excute Disable Bit) f controladores descargar gratis (ver. 1.07)
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