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The Dell OptiPlex XE is a special version designed for equipment manufacturer, retail/point-of-sale (POS) systems. [37] They are based on the standard OptiPlex models with added features; such as a higher heat threshold, MIL-STD 810G testing [ 38 ] and powered USB/Serial.
Each model of Dell's OptiPlex line of computers typically includes an Ultra-Small Form Factor (USFF) chassis option. In the Core 2 era, these machines used 8.9 cm (3.5") desktop hard drives and external power supplies, such as the OptiPlex 745 and 755. More recent units use 6.4 cm (2.5") laptop hard drives and have integrated power supplies ...
To serve as a central backbone to which all other modular parts such as CPU, RAM, and hard drives can be attached as required to create a computer; To be interchangeable (in most cases) with different components (in particular CPU and expansion cards) for the purposes of customization and upgrading; To distribute power to other circuit boards
Early BIOS versions did not have passwords or boot-device selection options. The BIOS was hard-coded to boot from the first floppy drive, or, if that failed, the first hard disk. Access control in early AT-class machines was by a physical keylock switch (which was not hard to defeat if the computer case could be opened).
Many host computer hardware and software components assume the hard drive is configured around 512-byte sector boundaries. This includes a broad range of items including chipsets, operating systems, database engines, hard drive partitioning and imaging tools, backup and file system utilities as well as a small fraction of other software applications.
A hard disk drive failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A hard disk failure may occur in the course of normal operation, or due to an external factor such as exposure to fire or water or high magnetic fields , or suffering a sharp impact or ...
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On July 29, 2008, Dell introduced the desktop counterpart to the Dell Studio Laptops, the Dell Studio Hybrid PC. A compact desktop legacy-free PC using laptop components, it contained the same slot-loading optical drive as the laptops, with the range of connectivity (e.g., number of USB ports) expected of a desktop PC.