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UNIT 4 REASEARCH PAPER 1: pORT EXPANDERS

Andrew Otano- Castro 04/10/2015
UNIT 4 REASEARCH PAPER 1: pORT EXPANDERS

Andrew Otano- Castro 04/10/2015
NT1110
NT1110

What is a port expander? Port expander are hardware device designed to allow a user to utilize more than one device on a single port at one time. It’s able to connect several devices to one serial port, for example connecting mouse, and keyboard when you only have one USB slot to use, you would use a port expander to fix this problem. There are several different types of port available for expander hardware, but to list a few we have USB, Ethernet, Audio, SAS, VGA, Microphone, DVI, and Video ports.( see pictures below). Port expanders are made generic so it’s compatible with most computers if not all, as long as the computer has the ports for which you are trying to expand for. With anything there are always disadvantages, and advantages. Disadvantages to port expanders are that whenever you have it fully connected it takes away performance from all devices since they all share the same bandwidth. Example if you have a 6GBps port expander which can connect up to 8 devices, when all connected creates a traffic jam making the performance slow creating a bottle neck effect. Also most are external, requires a lot of power, for this reason you possibly overload/ruin the power supply, or PC may not start till all is disconnected. Advantages to port expanders are that it allows you to connect several devices , and gain more ports.

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