unit size or stripe width.

DMA — direct memory access — A channel that allows certain types of data transfer between RAM and a device to bypass the processor.

docking device — See APR.

DMTF — Distributed Management Task Force — A consortium of hardware and software companies who develop management standards for distributed desktop, network, enterprise, and Internet environments.

domain — A group of computers, programs, and devices on a network that are administered as a unit with common rules and procedures for use by a specific group of users. A user logs on to the domain to gain access to the resources.

DRAM — dynamic random-access memory — Memory that stores information in integrated circuits containing capacitors.

driver — Software that allows the operating system to control a device such as a printer. Many devices do not work properly if the correct driver is not installed in the computer.

DSL — Digital Subscriber Line — A technology that provides a constant, high-speed Internet connection through an analog telephone line.

dual-core— An Intel® technology in which two physical computational units exist inside a single processor package, thereby increasing computing efficiency and multi-tasking ability.

dual display mode — A display setting that allows you to use a second monitor as an extension of your display. Also referred to as extended display mode.

DVD-R— DVD recordable — A recordable version of a DVD. Data can be recorded only once onto a DVD-R. Once recorded, the data cannot be erased or written over.

DVD+RW — DVD rewritable — A rewritable version of a DVD. Data can be written to a DVD+RW disc, and then erased and written over (rewritten). (DVD+RW technology is different from DVD-RW technology.)

DVD+RW drive — drive that can read DVDs and most CD media and write to DVD+RW (rewritable DVDs) discs.

DVI — digital video interface — A standard for digital

transmission between a computer and a digital video display.

E

ECC — error checking and correction — A type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory.

ECP — extended capabilities port — A parallel connector design that provides improved bidirectional data transmission. Similar to EPP, ECP uses direct memory access to transfer data and often improves performance.

EIDE — enhanced integrated device electronics — An improved version of the IDE interface for hard drives and CD drives.

EMI — electromagnetic interference — Electrical interference caused by electromagnetic radiation.

ENERGY STAR® — Environmental Protection Agency requirements that decrease the overall consumption of electricity.

EPP — enhanced parallel port — A parallel connector design that provides bidirectional data transmission.

ESD — electrostatic discharge — A rapid discharge of static electricity. ESD can damage integrated circuits found in computer and communications equipment.

expansion card — A circuit board that installs in an expansion slot on the system board in some computers, expanding the capabilities of the computer. Examples include video, modem, and sound cards.

expansion slot — A connector on the system board (in some computers) where you insert an expansion card, connecting it to the system bus.

ExpressCard — A removable I/O card adhering to the PCMCIA standard. Modems and network adapters are common types of ExpressCards. ExpressCards support both the PCI Express and USB 2.0 standard.

Express Service Code — A numeric code located on a sticker on your Dell™ computer. Use the Express Service Code when contacting Dell for assistance. Express Service Code service may not be available in some countries.

extended display mode — A display setting that allows

Glossary

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Dell D830, PP04X manual 143, Docking device See APR

PP04X, D830 specifications

The Dell PP04X, commonly known as the Dell Latitude E6420, is a versatile and robust laptop that is designed for business professionals and power users alike. It combines performance, durability, and a wide array of connectivity options, making it a popular choice in the corporate world.

One of the standout features of the PP04X is its solid build quality. The laptop is constructed with a premium aluminum chassis paired with a magnesium alloy frame, ensuring it can withstand the rigors of daily use. The spill-resistant keyboard provides an added layer of protection against accidental spills, making this device a reliable option for users on the go.

The Dell PP04X is powered by Intel's second-generation Core processors, providing excellent performance for multitasking and demanding applications. With options ranging from Core i3 to Core i7, users can select the level of power they need for their specific tasks. The laptop supports up to 8GB of DDR3 RAM, which contributes to its ability to handle multiple applications simultaneously without compromising speed.

In terms of storage, the Latitude E6420 offers various configurations, including traditional hard drives (HDD) and solid-state drives (SSD), allowing users to balance performance and storage capacity based on their requirements. The inclusion of SSD options results in faster boot times and quicker file access, greatly enhancing overall productivity.

The display of the Dell PP04X is another highlight. It features a 14-inch HD screen with anti-glare technology, making it suitable for use in various lighting conditions, whether in a brightly lit office or while traveling. The high-resolution screen ensures crisp visuals, ideal for presentations and detailed graphic work.

Connectivity options on the Latitude E6420 are plentiful, featuring multiple USB ports, an HDMI output, and an ExpressCard slot for expandability. Additionally, users can opt for built-in mobile broadband capabilities to stay connected on the move.

Dell also places a strong emphasis on security in the PP04X. The laptop includes features such as a fingerprint reader, smart card reader, and optional TPM (Trusted Platform Module) for enhanced security, ensuring that sensitive information remains protected.

Overall, the Dell PP04X Latitude E6420 is an excellent choice for business users who require a durable and powerful laptop. With its blend of performance, security features, and connectivity options, it is well-suited to meet the demands of a fast-paced work environment. Whether for office use or travel, the PP04X provides a reliable and efficient computing experience.