It&#x27;s just a PCI card, buried beneath 51 disassembly steps: <a href="https:&#x2F;&#x2F;www.ifixit.com&#x2F;Guide&#x2F;iMac+Intel+21.5-Inch+EMC+2389+GPU+Card+Replacement&#x2F;6272" rel="nofollow">https:&#x2F;&#x2F;www.ifixit.com&#x2F;Guide&#x2F;iMac+Intel+21.5-Inch+EMC+2389+G...</a><p>A bit more complicated than I&#x27;d like :)