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port expander

   Also found in: Wikipedia 0.01 sec.

port expander

A device that connects several lines to one port in the computer. The port may be one interface type that is expanded into several by this device (see port multiplier), or it may contain multiple interfaces. For example, a port expander may provide additional serial and parallel ports on a laptop.


port expander [′pȯrt ik‚span·dər]
(computer science)
Equipment that connects links to several other devices to one port in a computer.


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I2C Port Expander Evaluation Kit (CY3242-IOX): Lets customers quickly evaluate the PSoC I2C Port Expander device's ability to replace multiple port expander ICs from other vendors and flexibly integrate I/O expansion, PWM functions and user EEPROM.
RBN's products include: the RBNi GigaEdge 8200 CWDM OEO ROADM which is OSP hardened and deployed in North America, Europe and Asia; the RBNi GigaEdge 2300 Programmable Optical Transport Platform which is configurable as a xWDM Port Expander or Transponder/Muxponder (GigaEdge 2320) or SONET/SDH Mini-MSPP (GigaEdge 2330); and the RBNi GigaEdge 6000 series passive, OSP hardened CWDM filter modules.
NYSE:CY) today introduced three new I2C port expanders that store all user settings in non-volatile memory, eliminating the need to reconfigure the device after each power-up.
 
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