Chapter 2. Architecture and technical overview 57support extends to the majority of frequently used devices, although various third-party PCIdevices might not provide native EEH support.Expansion card form factorsThere are two PCIe card form factors supported on the PS703 and PS704 blades: CIOv CFFhCIOv form factorA CIOv expansion card uses the PCI Express 2.0 x8 160 pin connector. A CIOv adapterrequires compatible switch modules to be installed in bay 3 and bay 4 of the BladeCenterchassis. The CIOv card can be used in any BladeCenter that supports the PS703 and PS704blades.CFFh form factorThe CFFh expansion card attaches to the 450 pin PCIe Express connector of the bladeserver. In addition, the CFFh adapter can only be used in servers that are installed in theBladeCenter H, BladeCenter HT, or BladeCenter S chassis.A CFFh adapter requires that either: A Multi-Switch Interconnect Module (MSIM) or MSIM-HT (BladeCenter HT chassis) isinstalled in bays 7 and 8, bays 9 and 10, or both. A high speed switch module be installed in bay 7 and bay 9. In the BladeCenter S, a compatible switch module is installed in bay 2.The requirement of either the MSIM, MSIM-HT, or high-speed switch modules depends onthe type of CFFh expansion card installed. The MSIM or MSIM-HT must contain compatibleswitch modules. See 1.7.6, “Multi-switch Interconnect Module” on page 33, or 1.7.7,“Multi-switch Interconnect Module for BladeCenter HT” on page 34, for more informationabout the MSIM or MSIM-HT.The CIOv expansion card can be used in conjunction with a CFFh card in BladeCenter H, HT,and in certain cases a BladeCenter S chassis, depending on the expansion card type.Table 2-8 lists the slot types, locations, and supported expansion card form factor types of thePS703 and PS704 blades.Table 2-8 Slot configuration of the PS703 and PS704 bladesCard location Form factor PS703 location PS704 locationBase blade CIOv P1-C19 P1-C19Base blade CFFh P1-C20 P1-C20Expansion blade CIOv Not present P2-C19Expansion blade CFFh Not present P2-C20
