The PCI express® link design of the Trenton BPC7009 backplane supports Trenton's BXT7059, TSB7053 and JXT6966 combo-class SHBs as well as other types of PICMG® 1.3 server or graphics-class SHBs. The backplane's PCI express switches sense the SHB and option card's PCIe link type and design to automatically establish communications. This enables the BPC7009 to support PCI express Gen 2.0 or Gen 1.1 option cards as well as different types of PICMG 1.3 SHBs. PCIe1 though PCIe3 are x16 mechanical slots driven with x8 PCI express Gen 2.0 or 1.1 electrical links. The other x16 slots (PCIe4 and PCIe6 through PCIe11) are driven with x4 PCIe links. PCIe5 is a x8 mechanical slot driven with a x1/x4 link from an SHB's optional expansion board. See the backplane layout drawings on page two for more details. The BPC7009 backplane is available with either vertical or right angle ATX/EPS and 12V AUX power connectors plus a terminal block to meet expanded system power demands.