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...accidental loops. • USB hub • To add more USB devices than your computer has USB connectors, you need a device called a USB hub. A hub provides additional connectors for your peripherals. Some USB devices (especially keyboards) feature built-in hubs...
...USB also distributes power, many USB devices don't require a separate power supply, although a bus-powered device must be attached upstream to either a host PC or a poweredhub. • The Black Box explain series make technology simple. It provides y...
...is • An uninterruptible power supply (UPS), also known as an uninterruptible power source or a battery backup, is a device that maintains a continuous supply of electric power to connected equipment by supplying power from a separate source when uti...
...other equipment such as hubs. Since it's made with stranded conductors, our patch cable is excellent for applications that call for repeated flexing without damaging the cable. • Since attenuation is higher in standard cables than in solid-conductor...
PoE phantom power • PoE phantom power • PoE over Gigabit Ethernet • 10BASE-T and 100BASE-TX Ethernet use only two pairs of wire in 4-pair CAT5/CAT5e/CAT6 cable, leaving the other two pairs free to transmit power for Power over Ethernet (PoE) a...
Power problems. • Power-problems • Sags • The Threat — A sag is a decline in the voltage level. Also known as “brownouts,“ sags are the most common power problem • The Cause — Sags can be caused locally by the start-up demands of electrical de...
...FREE Tech Support • • Power and Surge Protection • PDUs - Power Distribution Units • Convenient rackmount power. • Provide overvoltage protection. • Choose from 15-, 20-, or -30 amp circuitbreakers. • Available with front and rear outlets and di...
Interface-powered converters. • Interface-powered converters • Plug directly into RS-232 devices • Interface-powered converters plug directly into RS-232 devices, eliminating the need for external power supplies. These converters draw their po...
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