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  • Secure Site Manager, 16-Port
    Installation and User Guide (Jan-07)
 


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  • 2 x 1 Compact VGA Switch
    Installation and User Guide
 


Product Data Sheets (pdf)...Compact VGA Switches


Product Data Sheets (pdf)...Automatic Switching System


Product Data Sheets (pdf)...Network Power Switch Jr.



Black Box Explains... Printer Sharing with Windows

Unlike the earlier DOS operating systems, Windows® doesn’t check to see if the printer is busy at the very beginning of the printing process. Windows will send out data to... more/see it nowstart a job even if the printer is signaling busy or unavailable. If your print sharer doesn’t have a buffer, critical printer-initialization information can be lost before your job is started. Once the initialization information is lost, the printer cannot interpret the job correctly.

A buffered print-sharing device is the most practical solution. When Windows starts printing to a buffered port, it “thinks“ it’s talking directly to the printer, and the critical initialization information is stored by the buffer. The buffer can send out a busy signal to Windows, so it delays sending more information until the buffer is accessible again. collapse

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