Glossary

A Universal Serial Bus device that provides additional connections to the Universal Serial Bus.

Hubs are a key element in the plug-and-play architecture of USB. The Figure shows a typical hub. Hubs serve to simplify USB connectivity from the user's perspective and provide robustness at low cost and complexity.

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

The direction of data flow from the host or away from the host. A downstream port is the port on a hub electrically farthest from the host that generates downstream data traffic from the hub. Downstream ports receive upstream data traffic.

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Philips 150S3F user manual Device
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150S3F specifications

The Philips 150S3F is a high-performance monitor designed to deliver exceptional visual quality and ergonomic functionality, making it a popular choice for both professional and personal use. With a 15-inch screen size, it strikes a balance between portability and usability, fitting seamlessly into various workspaces.

One of the key features of the Philips 150S3F is its advanced display technology. The monitor utilizes an LCD screen with a resolution of 1024 x 768 pixels, ensuring clear and sharp images and making it suitable for tasks ranging from office applications to graphic design. The 75 Hz refresh rate enhances smoothness, particularly when displaying video content, reducing flicker and improving the overall viewing experience.

A standout characteristic of the Philips 150S3F is its energy efficiency. The monitor is designed with eco-friendly technologies that reduce power consumption, contributing to lower energy bills and a smaller carbon footprint. This makes it an ideal option for environmentally conscious consumers as well as businesses aiming for sustainable practices.

The ergonomic design of the Philips 150S3F includes height-adjustable features that allow users to customize the monitor's position for optimal viewing comfort. This is particularly important for professionals who spend long hours in front of the screen, as it helps reduce eye strain and promote better posture.

Connectivity is another highlight of the Philips 150S3F. The monitor includes a variety of input options, such as VGA, to accommodate different devices and ensure compatibility with older systems. This versatility makes it a practical choice for users with diverse technology needs.

In terms of aesthetics, the Philips 150S3F sports a sleek, modern design that complements any workspace. Its slim profile and minimalistic look enhance its appeal for modern users, while the durable construction ensures longevity.

Overall, the Philips 150S3F combines advanced display technology, energy efficiency, ergonomic features, and versatile connectivity to meet the demands of a range of users. Whether for business or personal use, this monitor remains a reliable and stylish option for achieving high-quality visual performance.
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