Lenovo BladeCenter PCI Express Gen 2 Expansion Blade II - system bus extender

The unique stacking capability of the IBM BladeCenter PCI Express Gen 2 Expansion Blade and Expansion Blade II allow you to connect up to four of them (depending on the attached server) to a single blade server providing up to eight PCIe 2.0 slots. In addition, you can still use a CFFh I/O expansion card adapter by installing it in the top-most expansion blade.