As a previous reviewer stated, the product comes with a Mini CD with the drivers on. While this isn't great for slot loading drives, such as my macbook, you can always connect to the router with an ethernet cable, so it's not a problem to download the drivers from LM Tech's website. As a snow leopard user I generally head to sites to download the latest drivers anyway.
I bought this as my airport failed, and given the price it seemed stupid to send macbook off for repair. Worked brilliantly and I get a strong (97% or higher) signal in every room of the house.