There are three main USB specifications that USB flash drives can connect through: 1.0, 2.0 and 3.0. The more users delete and write new data on the device, the more likely it will degrade. How a USB flash drive is used also affects its life expectancy. However, some drives are designed with single-level cell ( SLC) memory that supports approximately 100,000 writes. The memory within most USB flash drives is multi-level cell ( MLC), which is good for 3,000 to 5,000 program-erase cycles. Drives now come in capacities ranging between 8 gigabytes (GB) and 1 terabyte (TB), depending on manufacturer, and future capacity levels are expected to reach 2 TB. The first USB flash drive came on the market in 2000 with a storage capacity of 8 megabytes (MB). The drives support Microsoft Windows, Linux, MacOS, different flavors of Linux and many BIOS boot ROMs. When a user plugs the flash memory device into the USB port, the computer's operating system ( OS) recognizes the device as a removable drive and assigns it a drive letter.Ī USB flash drive can store important files and data backups, carry favorite settings or applications, run diagnostics to troubleshoot computer problems or launch an OS from a bootable USB.
A USB flash drive can be used in place of a compact disc. A USB flash drive - also known as a USB stick, USB thumb drive or pen drive - is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a keychain.
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