...a PoE-enabled network switch that’s designed to supply power directly to the cable from each port. The setup would look something like this: • End-span device → Ethernet with power • A • mid-span • device is inserted between a non-PoE device and t...

...distances or through switching systems. In this case the corresponding video splitters, video extenders, and video switches all must support HDCP to take part of the key information exchange. Every active device in the transmission chain must par...

...input to the output. Switching to battery operation takes up to 10 milliseconds. They only protect from power failures. • Line Interactive — They protect not only from power failure, but also from underand over-voltage. They are ideal for small t...

...electrical power. • The Cause — Noise has many causes including nearby lightning, load switching, industrial equipment, and radio transmitters. It may be intermittent or chronic. • The Effect — Noise introduces errors into programs and data files.

...to the price of a switch, this lock-out scheme raises hardware costs and limits transceiver choices. • Many vendors don’t advertise that SFP slots on their devices don’t accept standard SFPs from other vendors. This can lead to unpleasant surp...

...install a card, set DIP switches, and make IRQ settings. Now you can connect digital joysticks, scanners, speakers, cameras, or PC telephones in seconds. Instead of opening up your CPU to insert new boards, you make all the connections outside the c...

...IDs, jumpers, DIP switches, screws, latches, or terminators. • There are two types of FireWire connectors: 6-pin and 4-pin. The 6-pin connector, usually found on computers, provides two pairs of wires for signals and one pair of wires to provi...