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  • Video...How to protect and secure your CPUs with KVM extenders.

    Tasked with keeping CPUs or servers secure? Then watch this video tutorial to learn about KVM (keyboard/video/mouse) extension technology. It shows you how to use KVM extenders to put... more/see it nowextra distance between CPUs and user consoles located in public areas. The educational video covers common applications for KVM extenders, such as schools and harsh industrial-control environments, and demonstrates how the extenders maintain high monitor resolutions at even extended distances. Later, the video goes over options for extending KVM signals wirelessly and over an IP-based connection, and spotlights extenders that feature integrated USB hubs and dual-video support. collapse


Product Data Sheets (pdf)...Universal RJ Crimp Tool and Tool Kit


Black Box Explains... Buffers

A buffer (also called a spooler or a cache) is a temporary storage device used to share printers and compensate for a difference in speed and data flow between two... more/see it nowdevices. Buffers use RAM (Random-Access Memory) to take in data and hold it until the receiving device handles it.

A buffer serving a computer can be installed either internally or externally. Internal computer buffers are common in the forms of keyboard inputs, data caches, and video memory. An external buffer is usually used for printing.

An external buffer downloads jobs to the printer, freeing the computer so you can get back to work sooner.

A print buffer’s ports can be serial, parallel, or serial and parallel. Because a buffer’s ports operate independently of each other, a buffer also can be made to perform serial-to-parallel or parallel-to-serial conversion or to change the word structure and/or serial data rate (baud rate) of the data.

While most buffers are FIFO (First In, First Out), some advanced units can function as random-access buffers. For most serial buffers, hardware flow control is required, but some also support software (X-ON/X-OFF) control. Most buffers support printing of multiple copies of a document, provided the buffer has enough memory to store the entire print job. collapse

  • Manual... 
  • Outlet-Managed PDU User Manual
    User Manual for the MPSH8-S20-120V, MPSH8-S20-208+V, MPSH8-D20-120V, MPSH8-D20-208+V, MPSH16-D20-120V, and MPSH16-D20-208+V (Version 1)
 
  • Specification Sheet... 
  • CAT5e Shielded 350-MHz Solid Bulk Cable (STP) (Plenum, Black) Spec Sheet
    Specification Sheet for the EVNSL0518A-1000
 

Black Box Explains...Why you should consider a UPS.

Downtime is unacceptable and often costly. But it’s impossible to get 99.9% uptime when you plug your hardware into an AC outlet.

Power problems are the most common cause of network... more/see it nowinterruptions. According to an IBM® study, the average system is hit by 120 power disturbances per month.

Have you ever had to reset the clock on your VCR or seen the lights dim for a moment when the refrigerator kicks on? These are common occurrences that are insignificant at home but can cause a shutdown in your network. Many power disturbances are so short they’re invisible to the human eye, but they can make a router lock up or a switch require rebooting. Power problems are actually more common than you may know. For instance:
• 34% of network downtime is because of bad power (IBM study).
• 99% of power problems are brownouts (low voltage) or blackouts (complete outages). Only a UPS protects against those.
• It takes 90.87 seconds for switches in non redundant networks to recover from power interruptions.
• 45% of all data loss is caused by power problems.

For a small fraction of the cost of your networking hardware, you can purchase a UPS that protects your network from blackouts, brownouts (low voltages), and surges—even lightning strikes!

To prevent power disasters before they happen, more than 70% of servers are protected with a UPS. Network managers know that having a server down brings many operations to a halt. Although the loss of a single hub or router may not bring the entire corporation to a standstill, it can result in zero productivity for entire workgroups or remote offices.

How can you tell if your system is suffering from power problems?

See if some of these symptoms are familiar: damaged hardware, numerous service calls, erratic operation, unexplained problems, unreliable data, system slowdown, damaged software, system lockups, and more.

If you’ve experienced some of these problems, you need a UPS. It will keep power flowing, giving you enough time to shut down safely during a power outage. It will also regulate your power, smoothing out dangerous overvoltages and undervoltages, spikes, surges, and impulses that often go unnoticed. These power anomalies can be caused internally by nearby machinery, fluorescent lights, and elevators, as well as externally from nearby transformer problems, lightning strikes, downed power lines, and more.

Data and equipment losses from power problems are preventable. Eliminate system downtime and increase profitability and productivity with a UPS.

When looking for a UPS, consider these steps:

1. List all the equipment you have that needs protection. Remember to include monitors, terminals, hard drives, external modems, and any other equipment in the critical path of potential power or surge sources.

2. Add up the total amperage ratings of your equipment. This information is probably imprinted on the back of each device.

3. Multiply this total amperage figure by the operating voltage (typically 120 VAC in the U.S.) to obtain your total volt/amp (VA) requirement with a safety margin.

4. Select a UPS with a VA capacity at least as high as the amount in Step 3. To accommodate for future expansion, it’s wise to order a device with an even larger VA rating.

5. If you have questions about which UPS is right for you, contact Tech Support. collapse

  • Specification Sheet... 
  • CAT6 250-MHz Shielded, Stranded Bulk Cable (SSTP, PIMF), Gray, Specification Sheet
    Specification Sheet for EVNSL0272GY-1000 (v1)
 

Black Box Explains...Ceramic and composite ferrules.

Cables manufactured with ceramic ferrules are ideal for mission-critical applications or connections that are changed frequently. These cables are high quality and typically have a very long life. Ceramic ferrules... more/see it noware more precisely molded and fit closer to the fiber than their composite counterparts, which gives them a lower optical loss.

On the other hand, cables with composite ferrules are ideal for less critical applications or connections that won’t be changed frequently. Composite ferrule cables are characterized by low loss, good quality, and long life. collapse

  • Pdf Drawing... 
  • Multimode, 50-Micron Duplex Fiber Optic Cable, PVC, LC%X96SC PDF Drawing
    PDF Drawing for EFN6021 Series (Version 1)
 

Product Data Sheets (pdf)...Heavy-Duty Edge Switches

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