These are kb/m driver updates that allow Leopard users to utilize
newer versions of Apple's Aluminum Wireless Keyboard & Apple's Magic
Mouse. Note that these drivers are not installed by Apple's Software
Update utility and must be downloaded & installed manually.

The first download is for the newer keyboards, while the second is for
the Magic Mouse.

Compatibility
Architecture: PPC x86 (Intel)

These drivers require Leopard's final (10.5.8) update.
These drivers are already included with Snow Leopard & later, thus
installation is unnecessary on those systems.