One of our computers is a Power Mac G5 that runs on OS X 10.4.11. Is there a way we could upgrade to at least OS X 10.6 ?

No.

(140862)

karl tiefert wrote:

One of our computers is a Power Mac G5 that runs on OS X 10.4.11. Is there a way we could upgrade to at least OS X 10.6 ?

No.

The highest OS X version any older PowerMac computer can achieve is OS X 10.5.8 Leopard.

Sorry.