There's a lot of non-standard keys on any keyboard. I don't have that one, but several others that I have no need for.
Basic keyboard layout is region/language specific, but Photoshop keyboard shortcuts are based on the English keyboard layout. As a Norwegian, buying my keyboards here in Norway, that means several standard shortcuts are inaccessible because the keys don't exist.
Luckily most of them can be remapped to keys that I do have. The most urgent example is brush size up/down. There are no [ and ] keys on a Norwegian keyboard, so I have to go into the Tools section of Keyboard Shortcuts and remap them. It took me a while to discover that even those shortcuts could be remapped.