QIC cables carry DC power between cabinets and to controllers.
For portable cabinets next to each other, use the 16" cable. For studio systems having a 22-space cabinet on top of a 44-space cabinet, use the 24" cable. For an upside-down tilted studio cabinet use the 48" cable.
For setups using the QPS6 power supply, use the QIC-W to power multiple cabinets or the QIC-H to power a QDH20 assembly.