IBM NetVista Technical Information Manual

Also see for A20 6269: User guide Guía del usuario Guide d'utilisation Manual do utilizador Guida per l'utente

Contents

12 NetVista™ Technical Information ManualThe following connectors are available on the integrated audio controller:•Line/headphone out connector for connecting headphones or powered speakers.To hear audio from the adapter you must connect headphones or a set ofspeakers to the Line out port. These speakers must be powered with a built-inamplifier. In general, powered speakers are available with a wide range offeatures and power outputs.•Line in connector for connecting musical devices, such as a portable CD player orstereo system.•Microphone connector for attaching a microphone.Network connectionSome models of the NetVista computer have an integrated Ethernet controller.Features of the Ethernet controller are:• Operates in shared 10BASE-T or 100BASE-TX environment• Transmits and receives data at 10 Mbps or 100 Mbps• Has a RJ-45 Ethernet connector for LAN attachment• Supports Wake on LAN• Supports Remote Program Load (RPL) and Dynamic Host Configuration Protocol(DHCP)Real-time clock and CMOSThe real-time clock is a low-power clock that provides a time-of-day clock and acalendar. The clock settings are maintained by the battery when the power cord isremoved.The system uses 242 bytes of CMOS memory to store data. The CMOS memory iserased if the CMOS clear/recovery jumper is moved.To locate the battery, see “System board layout for the NetVista A40 and A40pcomputer” on page 3 or “System board layout for the A20 model computer” on page 4.Flash EEPROMThe system board uses 4 Mb of flash electrically erasable, programmable, read-onlymemory (EEPROM) to store the BIOS, IBM logo, Configuration/Setup Utility, and Plugand Play data.If necessary, the EEPROM can be easily updated using a stand-alone program that isavailable on a 3.5-inch diskette. For information to obtain the latest version of theFlash Update Utility program, see theNetVista User Guide.Expansion adaptersThe NetVista small form factor desktop model computer has two 32-bit, 33 MHz PCIslots. The NetVista desktop model computer has three 32-bit 33 MHz PCI slots.These connectors support the 5 V signaling environment that is defined inPCI LocalBus Specification 2.2. Some models also have a preinstalled AGP adapter.