No. MagicBridge is made to very exact specifications for the 2017+ Apple Magic Keyboard with Numeric Keypad, 2021+ Apple Magic Keyboard with Touch ID Numeric Keypad, and Magic Trackpad and Magic Trackpad 2. Even a fraction of a millimeter difference in size or shape will make other devices incompatible. Belkin's Bluetooth Wireless Keypad has a round battery compartment which prevents it from snapping into the MagicBridge, so it is not compatible.
