Dell GX240 User's Guide - Page 296

www.dell.com | support.dell.com URL Uniform Resource Locator. A standard way of specifying the location of an object, such as an HTML document, on the Internet. Examples of URLs include the following: • http://www.dell.com • http://support.dell.com • ftp.dell.com • mailto:[email protected] The part before the first colon specifies the access scheme or protocol. Commonly implemented schemes include FTP and http. The part after the colon is interpreted according to the access scheme and can introduce an IP address, indicate a path or file on a server, or locate a particular position within a specified document. USB Universal Serial Bus. An interface for devices such as keyboards, joysticks, scanners, speakers, or printers, that provides a maximum transfer speed of 12 Mb/second. Devices plug directly into a four-pin connector on your computer or into a multiport hub that connects to your computer. USB is hot-swappable, and up to 127 devices can be connected in daisy-chain manner. UTP Unshielded twisted pair. A common type of copper wiring used for telephone systems and Ethernet networks. To reduce electromagnetic induction between pairs of wires, sometimes called "crosstalk," two insulated copper wires are wound around each other to form a "twisted pair." See also STP. V Volt. A measurement of electric potential and electromotive force. If one volt is applied to a resistance of one ohm, a current of one ampere will flow across the resistance. VAC Volt(s) alternating current (AC). VDC Volt(s) direct current (DC). VRM Voltage regulator module. A component installed on the system board that senses the voltage requirements for a microprocessor and ensures that the correct voltage is maintained. 44