The AL506 monitor from Acer was one of the older models in the AL range of monitors from Acer. There are no user manuals for these older models however you should not need one for this. The driver is a standard Windows XP 32bit version driver which came with all monitors during 2009. The driver is easy to install. Download the driver file below and open the zip file with a program such as Winzip, Peazip or 7Zip. Once you have opened the file ‘right-click’ on the file and click on the install option. Its is very quick and easy. Search this website for other AL series monitors such as the Acer AL1916 and the AL1917W monitors.