Ultra Ata Cables - HP xw8400 Service And Technical Reference Manual

Ultra ATA cables

When installing a second device on either the primary or secondary controller, you must use an industry
standard 80-conductor Ultra ATA cable for optimal performance. These cables have a maximum length
of 18 inches and a maximum distance of six inches between the two devices for a two-drive cable.
Drives operating at speeds faster than those of the Ultra ATA-33 devices require industry-standard 40-
pin, 80-conductor cables to maintain the highest data transfer rates possible with the improved
technology.
When using Ultra ATA-133, -100, -66, and -33 drives in the same system, each drive will operate at its
appropriate data transfer rate.
ENWW Ultra ATA cables 145