IBM NetVista X40 Technical Information Manual

Also see for 2179: Hardware Maintenance Manual User guide User guide Podręcznik użytkownika

6 Technical Information• Support for up to five-meter cable length from host to hub or hub to hub• Guaranteed bandwidth and low latencies appropriate for specific devices• Wide range of packet sizes• Limited power to hubsFor information on the connector pin assignment for the USB interface, see “USB portconnectors” on page 31.Audio SubsystemYour computer comes with an integrated audio controller that is capable of playingand recording sounds. It supports SoundBlaster, Adlib, and Microsoft WindowsSound System applications.The device drivers for the preinstalled audio controller are on the hard disk. Thedevice drivers are also available on Product Recovery CDs that come with yourcomputer.If you connect an optional device to the audio adapter, follow the instructionsprovided by the manufacturer.Note: Additional device drivers might be required. If necessary, contact themanufacturer for information on these device drivers.The following connectors are available on the audio adapter or integrated audiocontroller:• Line Out port for connecting powered speakers or headphones. You mustconnect a set of speakers to the Line Out port to hear audio from the adapter.These speakers must be powered with a built in amplifier. In general, anypowered speakers designed for use with personal computers can be used withthe audio adapter. These speakers are available with a wide range of featuresand power outputs.• Line In port for connecting musical devices, such as a portable CD-ROM playeror stereo.• Microphone for connecting a microphone.Integrated peripheral controllerControl of the integrated input/output (I/O) and diskette drive controllers isprovided by a single module, the integrated peripheral controller (SMC FDC 87B813).This module, which supports Plug and Play technology, controls the followingfeatures:• Diskette drive interface• Keyboard and mouse portsKeyboard and mouse portsA general purpose 8-bit microcontroller, 8042AH compatible, controls the mouse andkeyboard subsystem. The controller consists of 256 bytes of data memory and 2 KB ofread-only memory (ROM).The controller has two logical devices: one controls the keyboard and the othercontrols the mouse. The keyboard has two fixed I/O addresses, a fixed IRQ line, andcan operate without the mouse. The mouse cannot operate without the keyboard