A daisy chain is an interconnection of computer devices, peripherals, or network nodes in series, one after another. It is the computer equivalent of a series electrical circuit. In personal computing, examples include Small Computer System Interface (SCSI) and Fire Wire, which allow computers to communicate with peripheral hardware such as disk drives, tape drives, CD-ROM drives, printers, and scanners faster and more flexibly. Its advantage is simplicity and scalability. The user can add nodes anywhere along the chain, up to a certain maximum (16 in SCSI-2 or SCSI-3, for example).