3Ware 9550SX-8LP Quick Installation Guide - Page 23

Connecting Drive Activity LED Indicators Figure 18. 16-Port 3ware 9550SX-16ML Serial ATA RAID Controller LED indicators for individual drives J7 is for drives 0, 1, 2, 3 (left to right) J8 is for drives 4, 5, 6, 7 (left to right) J9 is for drives 8, 9, 10, 11 (left to right) J1 is for drives 12, 13, 14, 15 (left to right) Overall LED drive status indicator is the right-most LED header pin pair on each LED connector (J7, J8, J9, J1). The anode is the lower of the two pins and the cathode is the upper. Additional Details About the LED Status Connectors As shown in Figure 15 through Figure 18, LED connectors for individual drives are on J7, J8, J9, and J1 for the full-size 16 port card, on J7, J8, and J9 for the full-size 12-port cards, on J7 and J8 for the half-size 8-port, and on J7 for the 4-port cards. Pin 1 is located in the lower left-hand corner of each 10-pin connector. The odd-numbered pins, located on the bottom row, are 3.3V for the anode (+) side of each LED to be connected. The evennumbered pins are on the top or cathode (-) side. www.3ware.com 19