A system for housing storage devices in an electronic device includes a first drive bracket, a second drive bracket; and a chassis having the first or the second drive bracket installed therein. The flexible guideway has a first end that may be coupled to a first elongated guideway and a second end that may be selectively coupled to one of a multiple quantity of alternative guideways. The first photomask has a plurality of first features thereon, and the first photomask having a first global pattern density. In this way, a single event notification message can be used to indicate the occurrence of three different types of actions while editing an XML document. A terminal is similarly plated to made the resistance reduction.