Adding expansion units to an existing 12X loop

Use this procedure to add expansion units to an existing 12X loop.

1. Identify the 12X loop to which you want to add the expansion units.
2. Identify connectors 0 and 1 of the 12X connector pair on the system unit that is associated with the loop identified in step 1.
3. Find the 12X cables that were included with the expansion units.
4. Choose from the following options:
   • To add the expansion units to the beginning of the loop, go to step 5.
   • To add the expansion units to the middle of the loop, go to step 6.
   • To add the expansion units to the end of the loop, go to step 7.
5. To add the expansion units to the beginning of the loop, complete the following steps:
   1. Find connector 0 on the first expansion unit on the loop (the one connected to connector 0 on the system unit). Move the 12X cable from connector 0 on this unit to connector 0 on an expansion unit to be added.
   2. Connect another 12X cable to connector 1 on the expansion unit added in step 5.a.
   3. If you are adding another expansion unit, complete the following steps:
      1. Find the other end of the cable that is connected to connector 1 on the expansion unit just added. Connect that end to connector 0 on the next expansion unit to be added.
      2. Connect another cable to connector 1 on the expansion unit added in step 5.c.i.
   4. Repeat step 5.c for each additional expansion unit.
   5. Find the other end of the cable from connector 1 on the last expansion unit added. Connect that end to connector 0 on the expansion unit that was disconnected in step 5.a.
6. To add the expansion units to the middle of the loop, complete the following steps:
   1. Find connector 0 on the expansion unit that will follow the expansion units that are being added. Move the 12X cable from connector 0 on that unit to connector 0 on an expansion unit to be added.
   2. Connect another 12X cable to connector 1 on the expansion unit added in step 6.a.
   3. If you are adding another expansion unit, complete the following steps:
      1. Find the other end of the cable that is connected to connector 1 on the expansion unit just added. Connect that end to connector 0 on the next expansion unit to be added.
      2. Connect another cable to connector 1 on the expansion unit added in step 6.c.i.
   4. Repeat step 6.c for each additional expansion unit.
   5. Find the other end of the cable from connector 1 on the last expansion unit added. Connect that end to connector 0 on the expansion unit that was disconnected in step 6.a.
7. To add the expansion units to the end of the loop, complete the following steps:
   1. Move the 12X cable from connector 1 on the system unit to connector 0 on one of the expansion units to be added.
   2. Connect another 12X cable to connector 1 on the expansion unit added in step 7.a.
   3. If you are adding another expansion unit, complete the following steps:
      1. Find the other end of the cable from connector 1 on the expansion unit just added. Connect that end to connector 0 on the next expansion unit to be added.
      2. Connect another cable to connector 1 on the expansion unit added in step 7.c.i.
   4. Repeat step 7.c for each additional expansion unit.
   5. Connect the other end of the cable from connector 1 on the last expansion unit added to connector 1 on the system unit.
8. Return to the procedure that sent you here.