HP SuperStack 3 4400 Cascade Extender Cable (JE887A)
The Cascade Extender Unit provides three ports, enabling you to stack three or more Switches together. It is a device that allows its host Switch to be removed and replaced without disturbing the rest of the stack.
Expansion Slots Total (Free) 2 ( 2 ) x Stacking Module slot
Compatible Slots 1 x Stacking Module slot