Intel SE7221BK1 User Guide - Page 22

Server Board Features Intel® Entry Server Board SE7221BK1-E User Guide PCI Buses There are four independent PCI bus segments (dependent on model). The PCI buses comply with the PCI Local Bus Specification, Rev 2.3. ƒ P32-A supports Slot 1 and NIC 1 on a 32-bit/33 MHz bus routed from the ICH6R. ƒ P32-B supports the optional second NIC routed through the PXH. ƒ P64-C supports two PCI-X slots routed through the PXH. In some models PC64-C will instead support the riser slot if used for PCI-X. ƒ x8 PCI-Express* is available (optional) from the Intel® Adaptive Slot technology slot and routed from the MCH. ƒ The Adaptive Slot is only available on Intel® Entry Server Board SE7221BK1-E (LX SKU) and the Intel® Entry Server Platform SR1425BK1-E. Table 5. PCI Buses PCI Bus Voltage Width Segment SC5250-E Pedestal Chassis PCI 5V 32 bits PCI-X 3.3V 64 bits Speed 33 MHz 100 MHz Type PCI I/O Card Slots P32-A P64-C Slot 1 Slot 4 ; Slot 5, PCI-E (x8) 3.3 8 lanes SR1425BK1-E Rack Chassis PCI-E (x8) 3.3 8 lanes PCI-X 3.3V 64 bits 100 MHz 100 MHz 66 MHz Slot 6 Adaptive Riser Slot Adaptive Riser Slot Riser Options Peripherals and add-in cards are not included in your system and must be purchased separately. For 1U models, you must use the 90° riser option to add in PCI, PCI-X or PCI-Express* adapters. The 64-bit (white) slots cannot be used for 1u or if a 90° riser card is installed. Riser cards for the Intel® Entry Server Board SE7221BK1-E are custom fit and provide either PCI 2.3 or PCIExpress* capability. Please see the available accessories list at http://support.intel.com/support/motherboards/server/SE7221BK1-E. 8