Keine Ahnung welchen Rechner du hast, also selberbauen.
Zitat Apple:
The VESA compliant Aluminum iMac models can be wall mounted with an adapter kit from Apple or an Apple Authorized Reseller. These stock systems include the:
iMac "Core 2 Duo" 2.4 24-Inch (Al - Original)
iMac "Core 2 Extreme" 2.8 24-Inch (Al - Original)
iMac "Core 2 Duo" 2.8 24-Inch (Early 2008/Penryn)
iMac "Core 2 Duo" 3.06 24-Inch (Early 2008/Penryn)
iMac "Core 2 Duo" 2.66 24-Inch (Early 2009)
iMac "Core 2 Duo" 2.93 24-Inch (Early 2009)
iMac "Core 2 Duo" 3.06 24-Inch (Early 2009)
iMac "Core 2 Duo" 3.06 27-Inch (Late 2009)
iMac "Core i5" 2.66 27-Inch (Late 2009)
iMac "Core i3" 3.2 27-Inch (Mid-2010)
iMac "Core i5" 2.8 27-Inch (Mid-2010)
iMac "Core i5" 2.7 27-Inch (Mid-2011)
iMac "Core i5" 3.1 27-Inch (Mid-2011)