Source by Wikipedia
A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer.
Other Types of Bus
USB
USB or Universal Serial Bus is an external bus that most popular form of bus use today
USB is hot swappable
USB can daisy-chain up to 127 devices
USB Speeds
USB 1.0 supports 1.5Mbps
USB 1.1 supports 12Mbps
USB 2.0 supports up to 480Mbps
USB 3.0 supports up to 4.8Gbps
USB_A Connector
USB_B Connector
AMR
Released September 8, 1998, AMR is short for Audio/Modem Riser. AMR allows an OEM to create one card that has the functionality of either Modem or Audio or both Audio and Modem on one card. This new specification allows for the motherboard to be manufactured at a lower cost and free up industry standard expansion slots in the system for other additional plug-in peripherals.
AMR Slot
CNR
Introduced by Intel February 7, 2000, CNR is short for Communication and Network Riser and is a specification that supports audio, modem USB and Local Area Networking interfaces of core logic chipsets.
CNR Slot
PCI-X
PCI-X is a high-performance bus that is designed to meet the increased I/O demands of technologies such as Fibre Channel, Gigabit Ethernet, and Ultra3 SCSI.
PCI-X card
PCI-X Slots
Type of Bus | Bits Wide | Clock Speed | Transfer Speed |
PCI-X (v1) | 64bit | 66MHz * 8 = | 528MB/s |
PCI-X (v1) | 64bit | 100MHz * 8 = | 800MB/s |
PCI-X (v1) | 64bit | 133MHz * 8 = | 1066MB/s |
PCI Express
A high-speed serial I/O interconnect standard being used for high-speed connection it will eventually replace the PCI standards
PCI-e Card
Lane Widths | Peak unidirectional bandwidth | Peak full duplex bandwidth |
x1 | 250MB/s | 500MB/s |
x2 | 500MB/s | 1GB/s |
x4 | 1GB/s | 2GB/s |
x8 | 2GB/s | 4GB/s |
x16 | 4GB/s | 8GB/s |
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