Q-Bus {A backplane bus used on the now obsolete PDP and MicroVAX computer systems.}

QuickPath Bus {Intel uP interface, known internally as the Common System Interface (CSI), is explicitly designed to accommodate integrated memory controllers and distributed shared memory. QuickPath is a point-to-point processor interconnect being developed by Intel for their new generation processors.}

QuickRing Bus {QuickRing, is an offshoot of SCI. QuickRing uses six data signals and a clock speed of 175 MHz to achieve a throughput of 200 MBytes/second/link. The six data signals use the SCI P1596.3 Low Voltage Differential Signaling (LVDS) protocol for low power dissipation and low noise immunity. OBSOLETE, not even sure it reached the market place.}

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An alphabetic listing of released interface buses. Primarily the links point to pages that describe the physical and electrical interfaces. Interface Bus protocols are normally not addressed.