IDE Connector (CC)

This is an integrated Ultra-DMA PCI/IDE interface with an IDE connector capable of controlling up to two IDE devices. Ultra-DMA provides faster access to IDE devices that are Ultra-DMA compliant while maintaining support for IDE devices that do not support the Ultra-DMA specification.

The IDE controller supports:PIO and IDE DMA/bus master operationsMode 4 timingsTransfer rates up to 33 MB/secBuffering for PCI/IDE burst transfersMaster/slave IDE modeUp to two drives for one IDE channelDiskette Drive Connector (DD)

The diskette drive controller and connector on the system board can support up to two diskette drives of 1.44-MB and 2.88-MB formats.

System Jumpers (B)

These jumpers allow you to set certain characteristics of the system. Some jumpers are reserved and are not described in this section. Do not change any jumper unless it is necessary to configure the system. In some cases, changing the settings of reserved jumpers can cause damage to the system board.

Clear CMOS Jumper

This jumper allows you to clear the complimentary metal-oxide semiconductor (CMOS) memory. You should only do this if you cannot access the normal methods of modifying the CMOS and modifications to the CMOS are necessary. Clearing CMOS memory returns all BIOS Setup settings to the default values. This jumper occupies pins 1-3 of the connector. See “Setting the Jumpers” on page 72 for more information on setting the CMOS clear jumper.

Note:

You can connect an IDE signal cable, up to a maximum of 18 inches, to the IDE connector on the system board. The cable can support two devices, one at the end of the cable and one six inches from the end.

System Board Connectors 13