Here again, one of Apple background in HD that you can download for free. Featured with abstract two-dimensional figure with an Apple logo at the center. This background has a resolution of 1920x1080 pixels, this resolution is known as High Density or HD resolution. HD resolution picture will exactly matched for screens with 16:09 aspect ratio.
Whatever Operating System you use for your Apples, it's a good idea to chose a desktop background with this one. If you have an operating system of OS X Yosemite, you can choose your desktop picture with below instruction:
If you want to use the option of Use your own picture, you should prepare the picture first. You can save the picture as you like and select the picture at the folder you prepared.
Below pictures are several pictures that will be a cool Apple backgrounds: