Go to acer.com > Support > Drivers and Manuals . Search for or “Veriton M460” (these systems use the 185w80ps board). Filter by your OS—Windows XP, Vista, or Windows 7 32/64-bit. Download the following:
No. Power supplies do not use software drivers. However, your motherboard (which interfaces with the PSU) may require updated ACPI drivers for proper sleep states, voltage reporting, and fan control. Acer 185w80ps Driver
Tools like Snappy Driver Installer or SDIO Origin (open-source) may auto-detect missing ACPI or PSU monitoring drivers, but always prefer official Acer drivers. Go to acer