The Serial Advanced Technology Attachment is a connector type and data standard used to interface storage devices with a computer. It uses a much smaller connector than the IDE drive interface. The format also improves on IDE technology by supporting hot-swapping devices and using a data rate of up to three gigabits per second (with six gigabits announced). Along with a new data connector, SATA drives use a modified power connector as well, requiring compatible power supplies or the use of adapters. A modified version of the standard, eSATA, has been created for connecting external drives to a computer.