Apple part number 922-9790 is the left speaker assembly for iMac 21.5-inch Mid 2011 models. This refurbished component restores audio output to affected systems and is compatible exclusively with Mid 2011 iMac 21.5" configurations. The speaker integrates into the iMac's built-in speaker cavity and connects via the internal audio header on the iMac's logic board. Typical use cases include audio repair, speaker replacement after failure, or full system restoration of Mid 2011 iMac units. Installation requires partial disassembly of the iMac enclosure and is recommended for experienced technicians familiar with iMac internal architecture. This refurbished part has been tested and guaranteed to function as original equipment; available via quote.