Link to get the manuals:
http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=294e7ca2ddc0dc5669237e73641a288e&modelid=843282&q=Acer+Veriton+5800
Other documentation are available here:
http://www.retrevo.com/support/Acer-5800-Desktops-manual/id/843dj282/t/2/
Electro
November 2011