RXE Remote I/O 6-pack Upgrade Kit for 2RX enables you to add an additional 6 high-speed Active PCI-X slots to the 86842RX model of the IBM RXE-100 Remote Expansion Enclosure and doubles the capacity of your remote I/O for outstanding scalability.This kit is designed for 86842RX model of the IBM RXE-100 Remote Expansion Enclosure.