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DMA Channel: This option determines the direct memory access (DMA) channel used by the parallel connector and appears only when Mode is set to ECP. The available options are DMA 1, DMA 3, and Off.

IDE Drive Interface: enables or disables the computer's integrated device electronics (IDE) hard drive interface. With Auto (the default) selected, the computer turns off the IDE interface when necessary to accommodate a controller card installed in an expansion slot. As part of the boot routine, the computer first checks for a primary hard drive controller card installed in an expansion slot. If no card is found, the computer enables the IDE interface to use IRQ14 and IRQ15. If a primary controller is detected on the expansion bus, the IDE interface is disabled. Selecting Off disables the IDE interface.

Diskette Interface: controls the operation of the computer's integrated floppy drive controller. With Auto (the default) selected, the computer turns off the integrated floppy drive controller when necessary to accommodate a controller card installed in an expansion slot.

With Read Only selected, nothing can be written to any floppy drive using the computer's integrated floppy drive controller. (The computer can still read from the drives.) When Read Only is selected, Auto is also in effect, meaning that the computer turns off the integrated floppy drive controller as necessary.

Selecting Off turns off the integrated floppy drive controller; this setting is used to control the use of this legacy device or for troubleshooting purposes.

USB Emulation: determines whether the computer's basic input/output system (BIOS) controls Universal Serial Bus (USB) keyboards and mice. When On is selected (the default), the BIOS controls USB keyboards and mice until a USB driver is loaded by the operating system. When Off is selected, the BIOS does not control USB keyboards and mice, although they function during the boot routine. Set USB Emulation to Off if you are using a PS/2-compatible keyboard and mouse.

NOTE: For Windows NT®, Off is the default setting.

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Advanced Features

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Dell GX240 manual Advanced Features

GX240 specifications

The Dell GX240, a robust desktop computer released in the early 2000s, exemplifies the breed of machines engineered for business and productivity environments. Targeting corporate users, the GX240 was part of Dell’s OptiPlex series, known for its reliability, support, and manageability.

One of the main features of the Dell GX240 is its Intel Pentium 4 processor, which provided a significant performance boost at the time of its release. This processor was available in various speeds, enabling users to select the model that best met their processing needs. The GX240 also offered ample memory options, supporting up to 2GB of SDRAM, which was considerable for its era, allowing for smoother multitasking and application performance.

The design of the GX240 was practical, featuring a compact, space-saving chassis ideal for office environments. It was designed for easy serviceability, with tool-less access to components, facilitating quick upgrades or repairs. The system was equipped with various configurations, enabling customers to customize it with multiple hard drive options, typically using IDE drives, which provided sufficient storage for everyday tasks.

The desktop utilized a variety of expansion slots, including AGP for graphics cards and PCI slots for additional peripherals. This expandability was crucial for businesses needing to adapt or enhance their systems over time. Integrated Intel graphics were standard, but users could opt for dedicated graphics cards to meet more demanding graphical needs.

Connectivity was also a strong point for the GX240, featuring multiple USB 2.0 ports, a serial port, and audio input/output capabilities. These ports allowed for seamless integration with various peripherals and devices, essential for a productive work environment. The GX240 also supported network connectivity through a built-in Ethernet controller, making it well-suited for office use, especially in networked environments.

In terms of software, the GX240 was usually shipped with Microsoft Windows XP, ensuring users had access to a stable and user-friendly operating system. This operating system not only provided compatibility with a wide range of applications but also enhanced the overall user experience.

In conclusion, the Dell GX240 was a solid desktop choice for businesses in the early 2000s, combining performance, upgradability, and a compact design. Its Intel Pentium 4 processor and ample memory options made it suitable for various tasks, while its space-saving design and expansion capabilities allowed businesses to adapt the system to their evolving needs.