Posted filed under CompTIA A+.

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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