Chapter 4 Hardware Setup
39
WA133 Series
4.7.1 SCSI Channel 50-pin connector
The motherboard provides one Ultra SCSI channel, which supports an 8-bit, single-ended, and the
synchronous data transfer rate to 20 MB/s. The connector also supports the complete range of SCSI
devices, including hard disk drives, CD-ROM drives, tape backup units, MOs, CD-ROMs, printers, and
scanners.
4.7.1 Primary / Secondary IDE Connectors (IDE0 / IDE1)
This motherboard provides two independent Ultra ATA/66 IDE channels, which doubles the ATA/33
burst data transfer rate to 66 MB/s and are 100 percent backward compatible with all existing ATA /
ATAPI devices. These connectors also support ZIP and LS-120 devices.
The ATA/66 requires a special 40-pin, 80-conductor cable that reduces noise bleed-over and
improves signal integrity by providing 40 additional ground lines between each of the standard
40-pin ATA (IDE) signal lines and ground lines. Although a new 40-pin, 80-conductor cable is
required for Ultra ATA/66, the chipset pin connector remains the same at 40.
The 40-pin, 80-conductor cables will support the Cable Detect feature. The
blue (end) connector should be connected to the system board. The black
(end) connector is known as the master position. The gray (middle)
connector can be used for slave devices.
A legacy ATA (IDE) drive can coexist with an Ultra ATA/66 drive. However, for the Ultra ATA/
66 device to attain Ultra DMA 4 mode, an Ultra ATA/66 capable cable is required.
Orient the red markings on the ribbon cable to pin1 of the connector