Dell 3 - Manual (Page 126)

124 PERC 3/DC or PERC 3/DCL Hardware Installation
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J14 SCSI Activity LED
J14 is a four-pin connector for an LED mounted on the computer enclosure.
Table 9-7 displays the J14 pinout.
J16 and J18 TERMPWR Enable
J16, and J18 are 2-pin connectors that enable termination power to the
SCSI bus for each SCSI channel. The default is pins 1 and 2 jumpered.
Table 9-8 displays the settings for J16 and J18.
Ta b l e 9 - 6 . J 1 3 D i r t y C a c h e L E D P i n o u t
Pin Description
1 Signal pulled high
2 Dirty cache signal
Ta b l e 9 - 7 . J 1 4 S C S I A c t i v i t y P i n o u t
Pin Description
1 VCC
2 SCSI activity signal
3 SCSI activity signal
4 VCC
Ta b l e 9 - 8 . J 1 6 a n d J 1 8 T E R M P W R E n a b l e S e t t i n g s
Jumper Termination
Power
Channel Settings
J16 0 Short pins 1-2 to have the PCI bus on the host
computer provide TermPWR. This is the default
setting. Leave open to let the SCSI bus provide
TermPWR.
J18 1 Short pins 1-2 to have the PCI bus on the host
computer provide TermPWR. This is the default
setting. Leave open to let the SCSI bus provide
TermPWR.