Glossary

Hubs are wiring concentrators and enable the multiple attachment characteristics of USB. Attachment points are referred to as ports. Each hub converts a single attachment point into multiple attachment points. The architecture supports concatenation of multiple hubs.

The upstream port of a hub connects the hub towards the host. Each of the other downstream ports of a hub allows connection to another hub or function. Hubs can detect, attach and detach at each downstream port and enable the distribution of power to downstream devices. Each downstream port can be individually enabled and configured at either full or low speed. The hub isolates low speed ports from full speed signaling.

A hub consists of two portions: the Hub Controller and Hub Repeater. The repeater is a protocol- controlled switch between the upstream port and downstream ports. It also has hardware support for reset and suspend/resume signaling. The controller provides the interface registers to allow communication to/from the host. Hub specific status and control commands permit the host to configure a hub and to monitor and control its ports.

Device

A logical or physical entity that performs a function. The actual entity described depends on the context of the reference. At the lowest level, device may refer to a single hardware component, as in a memory device. At a higher level, it may refer to a collection of hardware components that perform a particular function, such as a Universal Serial Bus interface device. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical.

Downstream

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170C8 specifications

The Philips 170C8 is a versatile and efficient 17-inch LCD monitor that blends performance with aesthetic appeal. Designed for both casual users and professionals, this monitor boasts a range of features that cater to diverse computing needs.

One of the standout characteristics of the Philips 170C8 is its outstanding image quality. With a resolution of 1280 x 1024 pixels and a 5:4 aspect ratio, it delivers crisp and clear visuals that make every detail pop. The monitor utilizes advanced TFT LCD technology, providing vibrant colors and sharp contrasts that enhance the viewing experience. The widescreen capability also allows for efficient multitasking, enabling users to open multiple applications side by side.

The monitor's brightness level of 250 cd/m² ensures that images remain bright and clear, even in well-lit environments. With a response time of 5 milliseconds, the Philips 170C8 minimizes motion blur, making it an excellent choice for gaming and fast-action video. This feature allows users to enjoy a smoother visual performance without ghosting, providing an immersive viewing experience whether for work or play.

Ergonomics is another significant aspect of the Philips 170C8. It comes equipped with multiple tilt adjustments, allowing users to find the most comfortable viewing angle. Additionally, its sleek design, with a thin bezel and a clean profile, fits seamlessly into any workspace, adding a modern touch to your setup.

The Philips 170C8 also incorporates energy-efficient technologies, making it an environmentally friendly choice. Its low power consumption ensures that users can save on energy bills while contributing to a reduction in carbon footprint. The monitor also complies with energy standards, such as Energy Star, verifying its commitment to sustainability.

For connectivity, the Philips 170C8 offers a range of options, including VGA and DVI-D ports, ensuring compatibility with various devices, including desktop computers and laptops. This extensive connectivity makes it easy for users to integrate the monitor into their existing setups without hassle.

In summary, the Philips 170C8 stands out as a powerful yet user-friendly monitor that meets the needs of both casual and professional users. With its high image quality, ergonomic design, and energy-efficient features, it is an excellent choice for anyone looking to enhance their computing experience. Whether used for office tasks, media consumption, or gaming, the Philips 170C8 delivers on performance and style.
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