Solid-state drive (SSD) storage or flash storage as it is sometimes referred to by many people describes a special kind of storage that uses no moving parts but uses flash memory. This storage can be reprogrammed or erased. Flash drive falls under the solid state drive technology and is available in many forms some being: portable USB drives, external storage devices and main storage drives in some very small laptops. A good example of portable USB drive is 16GB USB flash drive. All these forms of solid-state storage have reliable data retention capability though hard drives many have higher data lifespan. However all other benefits of SSD storage makes it a most preferred technology over hard drive storage. USB flash drive is among many other USB gadgets that connect to a computer through a USB port. The flash drives are small in size and their storage capacity is not reflected in their physical size. Apart from being small and very portable, they have data retention of up to 10 years. The capacity ranges from 512 Mega Bytes (MB) up to 64 Gigabytes (GB). Most users use portable USB flash drives to transfer files from one computer to another and from one location to another. Due to their upgraded storage capacity, flash drives are now being used to back up crucial files from hard drives. For instance a 16GB USB flash drive is a durable solid-state storage with enough capacity to store numerous large files for long. When you compare data retention capability of USB flash drive and other storage devices such as CDs, you will obviously acknowledge that USB flash drive is better. CDs are more prone to damages such as scratches. They are also more likely to be exposed to water or high temperatures both which will leave them and the data stored in them destroyed and inaccessible. USB flash drives can withstand being dropped, stepped on, and tossed around without sustaining any internal damage. The durable encasement also protects the internal parts. All these prolong the lifespan of the data stored in it. While still comparing the two, it is important to note that storing data in CDs is a much slower process compared to storing it in flash drives. Most USB gadgets are considered to be fast and user-friendly because they are plug and play devices. Like most durable solid-state storages devices, USB flash drives are known for reliability and speed. They are reliable in the sense that they have long data life span. You can use your 16GB USB flash drive for years, making changes to your project file and never even once losing it or the changes. While using a CD, you will need to buy and burn a new one in case you make any changes. The speed to transfer files from PC to USB flash drive starts from 50 Mpbs and goes up to hundreds and hundreds. The larger the drive’s capacity the faster the file transfer process. As explained above USB flash drives speed can be attributed to their plug and play property and the fact that they do not have mechanical parts and that they use flash memory.