A local bus standard initiated by Intel having a bus width of usually 32 bits and operating at 33 MHz at the most. A 64-bit version is intended with the forthcoming atandard 2.0. Characteristics of PCI is the decoupling of processor and expansion bus by means of a bridge. The transfer rate reaches 133 Mbytes/s at 32 bits and 266Mbytes/s at 64 bits; bursts are carried out with any lenght. Unlike the VL Bus, PCI is specified processor-independent.