Daisychained

Daisychained or daisy-chained describes a configuration in which multiple devices are connected in a linear sequence, with the output or signal of one device feeding the next. The term evokes the image of a chain of daisies linked end to end and is used across several technical domains to indicate serial, not star, connectivity.

Contexts and usage

- Electrical and power distribution: In some setups, devices are connected in a chain with pass-through outlets or cables that allow multiple units to share a single supply. This can simplify cabling but raises safety and performance concerns, especially with higher loads. Many electrical codes limit or discourage long daisy chains of power strips, and heat buildup or voltage drop may occur.

- Data and communications: Certain interfaces support daisy chaining to extend a bus or link multiple devices in sequence. Examples include legacy SCSI and FireWire/IEEE 1394 configurations, and some DMX512 lighting systems where devices are linked in a line with a terminator at the end. Modern Ethernet and USB networks typically use tree or hub-and-switch topologies rather than simple serial chains, though some devices and protocols still permit limited daisy chaining.

- Audio and effects: In audio, signals or control data can flow through a chain of pedals or processors in series, with each stage processing the signal before passing it on. Power daisy chaining of pedals is also used, often via a shared power supply or multipedal adapter.

Advantages and drawbacks

Daisychaining reduces cabling and can simplify setup, but introduces potential single points of failure, greater propagation delay, impedance or voltage issues, and limits on length and scalability. Terminal devices at the end of the chain are typically designed to absorb or terminate the signal to prevent reflections.

See also: chain topology, bus topology, daisy chain.