The 12.9" keyboard is compatible with iPad Models iPad Pro 12.9-inch (6th generation), iPad Pro 12.9-inch (5th generation), iPad Pro 12.9-inch (4th generation), and iPad Pro 12.9-inch (3rd generation)
The 11" keyboard is compatible with iPad Models iPad Pro 11-inch (4th generation), iPad Pro 11-inch (3rd generation), iPad Pro 11-inch (2nd generation), iPad Pro 11-inch (1st generation), and iPad Air (4th generation)
