Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean your electronics [title] Clean the dust and dirt. [step] It's easy for your electronics to collect dust and debris over time, particularly with items that are stationary. Too much dust may even cause problems with your sound and picture quality.

Ending1: When cleaning, avoid using a paper towel as it may scratch your equipment. Instead, use a microfiber cloth for best results. Ending2: [substeps] Take your electronics apart so they are as free from dust and dirt as possible. Put your electronics on wire racks, in protective bags or on drip side bags to prevent flying dust or help run your electronics faster when disassembly is necessary. Ending3: This is especially true if you're cleaning a hard disk case or a large device. [title] Do not place it in a place where overhead fans can blow the dust and dirt out of your device. Ending4: To keep your electronics looking their best, don't try to pull them apart. This will only take away the need to clean them.

Answer format: ending1/ending2/ending3/ending4