IBM 6862 User Guide - Page 25

ECP/EPP has two advantages over SPP. When your computer is in ECP/EPP mode, you can print documents faster than when the computer is in SPP mode, and you can attach devices other than printers, such as communication and storage devices, to the parallel port. You can set modes of operation for the parallel port using the Configuration/Setup Utility program. Note: To minimize electromagnetic interference (EMI), use braid-shielded cables with metal ends when connecting a device to the parallel port. Serial ports Your computer has two standard 16550-UART serial ports that can be used to communicate with devices such as modems, plotters, and printers. Note: To minimize electromagnetic interference (EMI), use braid-shielded cables with metal ends when connecting devices to these ports. Universal Serial Bus ports The universal serial bus (USB) interface is a state-of-the-art technology developed to add more diversity and capabilities to personal computers. As a standard feature, your computer has two USB ports, so you can take advantage of new USB devices as they become available. Using this new technology, you can plug different types of optional, USB-compatible devices into the USB ports on your computer. Because USB incorporates Plug and Play technology, you can install and remove devices easily without turning off your computer or opening the cover. Once installed, the devices configure automatically. In addition, an option called a hub can be connected to a USB port on your computer, which enables you to plug in more than one device at a time. A hub converts a single USB connector into multiple ports where USB devices can be attached. For more information, see the USB Web site at: http://www.usb.org/ IBM-preinstalled software IBM-preinstalled software is provided with some models. This software includes an operating system, device drivers to support built-in features, and other support programs. Chapter 1. Your IBM personal computer 7