Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
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56 <strong>Barracuda</strong> <strong>18LP</strong> Product Manual, Rev. E<br />
9.6.4.2 Mating connectors for “<strong>LC</strong>” models<br />
The nonshielded connector shall be an 80 conductor connector consisting of two rows of 40 contacts with adjacent<br />
contacts 50 (1.27 mm) mils apart (see Figure 11b). I/O connection using a cable is not recommended.<br />
The length and size of the host equipment DC power carrying conductors from the DC power source to the<br />
host equipment 80 pin disk drive interface connector(s) should be strictly designed according to proper power<br />
transmission design concepts. No possibility for the equipment user to attach an 80 pin cable/connector should<br />
be allowed, since the length of the DC power carrying conductors could not be controlled and therefore could<br />
become too long for safe power transmission to the drive. Daisy-chain 80 conductor cables should especially<br />
not be allowed, since the power-carrying conductors on the 80 conductor interface were not intended to support<br />
a series of drives.<br />
To insure that both drive connector and host equipment mating connector mate properly, both drive connector<br />
and host equipment mating connector must meet the provisions of “SFF-8046 Specification for 80-pin connector<br />
for SCSI Disk Drives.”
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