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The HP 720579-001 is the USB audio board used in the ENVY TouchSmart 15 laptop line. It is a replacement part, not an upgrade: it restores the audio jacks and USB audio connection when the original board fails or the ports stop working. Buyers rate it highly, and it fits the listed ENVY TouchSmart 15 models directly. Compared with generic third-party boards, it is the exact HP part number, which matters most when matching a specific chassis revision.
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Lowest price we've seen: $60.00 on Nov 11 at GotoDirect. Tracked across 1 store since Nov 11.
Buyers rate this board very highly. Most say it matched the original part and brought the audio jacks back to working order. Complaints are few and center on fitment outside the listed models.
This is an HP USB audio board, part number 720579-001. It is a replacement part for the HP ENVY TouchSmart 15.