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What is the difference between a hub and a switch?

Hubs send all the packets they receive through all of their ports with no regard for the destination. The use of hubs adds unnecessary traffic on the network. In contrast, switches use Application Specific Integrated Circuits (ASIC’s) to make lightening fast decisions and direct packets to the single port that leads to its destination. Switches are often referred to as being smart since they learn and remember what devices are attached to each of their ports. They are ideal for efficiently connecting the nodes on a LAN.
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16 Channel Color Multiplexer with Digital Motion Detection DQ-200
NMC-1600 16CH Full Duplex Color Multiplexer
List Price: $1,300.00
Our Price: $738.40
Sale Price: $738.40
You Save $561.60 		16 Channel Color Multiplexer with Digital Motion Detection
Our Price: $635.00 		Clover DQ-200 4 BW Cameras built in a dome with real time quad splitter, remote controller
Our Price: $348.00
Full duplex allows video recording while viewing live video or playback Full-screen, 2x zoom, PIP, 2 X 2, 3 X 3, and 4 X 4 viewing options 192 programmable grid Motion sensing for each camera High-speed real-time 30fps display On-screen date and time display Includes AC power adapter 16 Channel Color Multiplexer with Digital Motion Detection 4 BW Cameras built in a dome with real time quad splitter, remote controller
Clover QB900 Compact Size, Real Time Digital Quad Splitter, Color Mace NQC-700 4 Channel Color Quad Processor, H-Res, PIP, Zoom & Motion Detection
ABQ-420C Full Color quad processor for security systems
Our Price: $194.00 		Clover QB900 Compact Size, Real Time Digital Quad Splitter, Color
Our Price: $182.90 		Mace NQC-700 4 Channel Color Quad Processor, H-Res, PIP, Zoom & Motion Detection
List Price: $290.00
Our Price: $170.10
Sale Price: $170.10
You Save $119.90
ABQ-420C Full Color quad processor for security systems Compact Size, Real Time Digital Quad Splitter, Color The Mace NQC-700 Color Quad Processor allows you to view all four of you cameras simultaneously in a quad split screen. The NQC-700 is a quad processor for color cameras with BNC connectors allowing all cameras to be viewed on one monitor simultaneously. The processor has 760 x 480 signal format and 30 fields/second refresh rate. The NQC700 comes with the quad processor, power supply and instruction manual.
DOM-4BQ BW QUAD DOME CAMERA with Wired Remote Controller Clover QB700 Compact Size, Real Time Digital Quad Splitter
DOM-4BQ BW QUAD DOME CAMERA with Wired Remote Controller
Our Price: $149.00 		Clover QB700 Compact Size, Real Time Digital Quad Splitter
Our Price: $129.90
4 cameras built into a single dome, it comes with Wired Remote Controller Wisecomm QB700 Compact Size, Real Time Digital Quad Splitter