Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to have more than two hard drives in a pc [title] Determine your best option. [step] External drives come in many shapes and sizes to fit any user's needs. Make sure your computer has a spare port to plug into.

Ending1: External drives for both windows and macos can also help. [title] Add your hard drives to your pc. Ending2: [substeps] Just want to plug and play? Look for a model without an external power supply. Frequently backing up your data? Some models come with automatic backup software. Ending3: Maybe you have to temporarily replace one if one is on your desk. [substeps] If your computer is older, you'll need a nearby hard drive to save space. Ending4: You can also buy a usb port if it is around the partition size you used earlier. [title] Determine your how large the drive and your existing parts can be.

Answer format: ending1/ending2/ending3/ending4