In some cases, though, the host adapter end of the cable would use a different connector.

A more complex connector can be built up using simpler connectors.

The common cooling fans used in computers use standardized connectors with 2 to 4 pins.

It allows daisy-chaining up to 14 instruments to a system controller using a 24-pin connector.

An external floppy disk drive can be added using a proprietary connector.

But different equipment makers use different connectors, so you might need another kind of adapter.

But Apple uses a 30-pin connector everywhere else.

The traditional cable uses 40-pin connectors attached to a ribbon cable.

The Nook Color uses a modified connector with two depths.

A double width card allows more component space, but does not provide any additional power or bandwidth because it only uses a single connector.