1. If it is mainly used to store small files such as text (such as WORD, spreadsheet, etc. ) and photos, a 16G USB flash drive is enough. Smaller capacity is also acceptable, such as 8 g.

2. If it is used to store videos (such as movies, teaching videos), games and other large files, you can consider choosing a USB flash drive with a capacity of more than 64G.

Generally speaking, 16Gu disk is more than enough.

The full name of U disk is USB flash drive, and the English name is "USB flash drive". It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug and play.

The advantages of U disk are: small and portable, large storage capacity, low price and reliable performance. U disk is very small, only the size of thumb, and extremely light, generally around 15g, especially suitable for carrying around. Generally, the capacities of USB flash drives are 2G, 4G, 8G, 16G, 32G, and 64G( 1GB is gone because of its small capacity), and there are also 128G, 256G, 5 12G,1t. There is no mechanical device in the USB flash drive, which has strong seismic performance. In addition, the USB flash drive has the characteristics of moistureproof, antimagnetic, high and low temperature resistance, and has good safety and reliability.

The main purpose of USB flash drive is to store data. Through the efforts of enthusiasts and merchants, USB flash drive has developed more functions: encryption USB flash drive, startup USB flash drive, antivirus USB flash drive, temperature measurement USB flash drive and music USB flash drive.