Recommended Minimum Cage Sizes: 1  Minimum size for 1 parakeet = 20â³ long x 18â³ deep x 18â³ high (Volume = 6,480â³ cubic inches). 2  Minimum size for 2 parakeets = 30â³ long x 18â³ deep x 18â³ high (Volume = 9,720â³ cubic inches) We offer this size to our budgie parakeet adopters â please see our bird supplies page for details. Minimum size for 2 parakeets = 30â³ long x 18â³ deep x 18â³ high (Volume = 9,720â³ cubic inches) We offer this size to our budgie parakeet adopters â please see our bird supplies page for details.
The most popular is a parallel ATA interface. A Optical drive is hardware that read and drive a DVD disk or programs. An optical drive is a drive that reads media in your computer. This  includes a disk drive, a CD , DVD, or Blu-Ray drive.   A device for reading discs on which data is stored.
First of all, an optical drive can be a CD, DVD, or BluRay drive. The previous pictures show its location, but here is one more. This is a picture of the top of a 660 showing 2 drives. The red arrow is pointing to the button of the first drive, the green box is around the button of the second drive.