A customer is ordering a new desktop computer system. The choices are 21-inch, 23-inch, or 24-inch monitor (optional); 1 TB or 2 TB hard drive; 6 GB or 8 GB of RAM; 16X DVD or Blu-ray disk optical drive; Intel, AMD, or NVIDIA video card; inkjet, laser, or laser color printer; 1-, 2-, or 3-year warranty. How many different machines can be ordered with a 2 TB hard drive?