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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 Speco Technologies RMX-9CD 9 CH Color Duplex Switcher/Multiplexer DOM-4BQ BW QUAD DOME CAMERA with Wired Remote Controller
16 Channel Color Multiplexer with Digital Motion Detection This 9 channel color duplex multiplexer allows the viewing of up to 9 image sources on one screen, while simultaneously recording full screen images on a VCR.

4 cameras built into a single dome, it comes with Wired Remote Controller