Avago Technologies 3ware 9550SXU-4LP - Manual (Page 21)

Connecting Drive Activity LED Indicators
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Connecting Drive Activity LED
Indicators
Figure 15, 10, and 11 show the location of LED indicators on the
different 9550SX controllers.
Figure 15. 8-Port 3ware 9550SX-8LP Serial ATA RAID Controller
Figure 16. 4-Port 3ware 9550SX-4LP Serial ATA RAID Controller
LED indicators for individual
drives on J7 and J8
Overall LED drive status
indicator: the last two pins of
J7 and J8. The anode is the
lower of the two pins and the
cathode is the upper.
LED connector details
J7 is for drives 0, 1, 2, 3 (left to right)
J8 is for drives 4, 5, 6, 7 (left to right)
LED indicators for individual
drives on J7: 0, 1, 2, 3
(left to right)
Overall LED drive status indicator:
the last two pins of J7. The anode
is the lower of the two pins and
the cathode is the upper.