Usb Interface; Accelerated Graphics Port; Integrated Audio - NEC PowerMate CT Service And Reference Manual

USB Interface

The Universal Serial Bus (USB) ports allow plug and play serial devices to be added without
having to open the system. One USB device can be plugged into each USB port for direct
system connection. With a hub and the proper cabling, up to 127 USB devices per port can be
addressed by the system.
The USB determines system resources for each peripheral and assigns them without user
intervention. Boot support for a USB keyboard is present so the system can be booted with a
USB keyboard instead of a standard keyboard.

Accelerated Graphics Port

The system board contains an AGP connector for the system's AGP video board. The AGP
board has a graphics controller, video memory, and a VGA-compatible connector. The AGP
port supports graphics-intensive, 2D/3D applications.
The 4X AGP graphics controller on the video board is specifically designed for graphics-
intensive operations, including 3D and 2D effects, texture mapping, text and color pixel
amplification, and video acceleration. The controller minimizes bus traffic by off-loading the
tasks normally performed by the processor, providing 64-bit, high resolution performance for
demanding True Color displays and other sophisticated graphics functions.
Connect a monitor to the AGP video board's VGA connector on the back of the system.

Integrated Audio

To support multimedia applications, an Yamaha YMF 752-S audio chip is integrated on the
system board. The chip provides 16-bit stereo, Sound Blaster Pro-compatible audio.
The sound system provides all the digital and analog mixing functions required for playing and
recording audio on personal computers. Features include stereo analog-to-digital and digital-to-
analog converters, analog mixing, anti-aliasing and reconstruction filters, line and microphone
level inputs, digital audio compression, and full digital control of all mixer and volume control
functions.
4-12 System Board