External device connected to a USB connector does not work.

External device connected to USB connector does not work during startup (before Windows 95 loads).

External devices in lower tiers do not work.

The operating system limits external devices connected by USB to two tiers which can include no more than two hubs on the first tier and no more than one keyboard and one pointing device on the first or second tier.

During startup, only two tiers are supported by the USB port. These tiers can include no more than two hubs on the first tier and no more than one keyboard and one pointing device on the first or second tier.

An unpowered hub is connected to another unpowered hub.

Reduce the number of connected external USB devices to no more than two hubs on the first tier, and no more than one keyboard and one pointing device on the first or second tier.

Use the external device only after Windows 95 or Windows 98 has loaded.

Reduce the number of connected external USB devices to no more than two hubs on the first tier, and no more than one keyboard and one pointing device on the first or second tier.

Use only powered hubs.

Make sure that all unpowered hubs are immediately preceded by powered hubs in the USB chain.

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Compaq 190 manual

190 specifications

The Compaq 190, a significant player in the evolution of portable computing, was unveiled in the early 1990s at a time when the demand for mobility in technology was surging. As a member of Compaq's renowned line of portable PCs, the Compaq 190 was a bridge between desktop power and laptop convenience, offering an impressive array of features and technologies that appealed to both business professionals and technology enthusiasts.

One of the main features of the Compaq 190 was its compact size. Weighing under 10 pounds, it was designed for easy transport, allowing users to work remotely without sacrificing performance. The device was equipped with a 10.4-inch LCD display, providing a balance between portability and screen real estate. This display was notable for its clarity, allowing users to engage with applications effectively, whether in an office setting or on the go.

Under the hood, the Compaq 190 was powered by an Intel CPU, commonly featuring early generations of the Intel 386 processor. This gave the laptop the capability to run various software applications efficiently, making it suitable for word processing, spreadsheets, and basic graphical tasks. Furthermore, the inclusion of a built-in hard drive, typically around 40 MB, provided ample storage for documents and applications of that era.

In terms of connectivity, the Compaq 190 was equipped with standard ports of the time, including serial and parallel ports, allowing users to connect external devices such as printers and modems. The addition of a PCMCIA slot supported expansion, enabling users to enhance functionality with network cards, additional storage, or even modems for internet connectivity.

Battery life was another essential characteristic of the Compaq 190, with options available for extended use. Users could expect several hours of operation away from an electrical outlet, a crucial feature for professionals frequently traveling for work.

Overall, the Compaq 190 represented a pivotal moment in portable computing technology. With its combination of portability, processing power, and essential features, it offered solutions for a generation that valued both functionality and mobility. The legacy of the Compaq 190 continues to influence the design and capabilities of modern laptops, reminding us of the early advancements that paved the way for today’s computing devices.