This is what System Report lists for this keyboard. It looks normal.
Keyboard Hub:
Product ID: 0x1006
Vendor ID: 0x05ac (Apple Inc.)
Version: 94.15
Serial Number: 0
Speed: Up to 480 Mb/sec
Manufacturer: Apple, Inc.
Location ID: 0xfa200000 / 2
Current Available (mA): 500
Current Required (mA): 300
Apple Keyboard:
Product ID: 0x0220
Vendor ID: 0x05ac (Apple Inc.)
Version: 0.69
Speed: Up to 1.5 Mb/sec
Manufacturer: Apple, Inc
Location ID: 0xfa220000 / 4
Current Available (mA): 100
Current Required (mA): 20
In System Preferences, the Modifier Keys were at default. I'm using the U.S. Extended input source and when I load the keyboard viewer I can see which keys are recognized while typing. For the numeric keypad, the number keys do not work, but all the keys around the keypad work. For example, Clear, = / * - + and Enter. But not the numbers. It's really weird because it was working fine with 10.6.8 before the upgrade.