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Product Data Sheets (pdf)...2x1 and 4x1 DisplayPort Video Switches


Product Data Sheets (pdf)...Secure Site Managers




Product Data Sheets (pdf)...Rackmountable DB25 Manual Switches


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


Product Data Sheets (pdf)...Code-Operated Switches




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