Apple part number 922-8409 is an ExpressCard cage assembly designed for MacBook Pro 17-inch models (2008-2011 generation). This internal component provides the mechanical and electrical interface for ExpressCard/34 expansion cards, supporting 5Gbps USB 2.0 and PCI Express connectivity standards. The cage attaches to the logic board and routes signals through the system's internal bus architecture, enabling addition of external storage controllers, capture devices, or other peripheral interfaces without occupying Thunderbolt or USB ports. Compatible with all 17-inch unibody MacBook Pro units equipped with ExpressCard slots; verify your specific model year against compatibility charts. Typical applications include video editors and photographers who require dedicated external RAID interfaces or high-speed card readers during mobile workflow operations.
Each unit has been tested and guaranteed fully functional. Available via quote from G5 Network Group.
