Windows 10 will begin its rollout for owners of Windows 7 and 8.1 PCs on July 29, but people who want to install the OS on a new PC can now pre-order the Home and Pro SKUs from Amazon. As previously rumored, these versions will be sold and delivered inside USB Flash drives for the first time.

Windows 10 Home is priced at $119.99, again as previously reported, while the Pro SKU is priced at $199.99. Amazon's listings shows that shipments of the OS via USB Flash Drives will begin on August 16, or over two weeks after the official launch of the OS.

Check out Windows 10 Home on Amazon ($119.99)

Check out Windows 10 Pro on Amazon ($199.99)