6513 Slot Usage for WS-67XX (WS-X6816-GBIC, WS-X6748-GE-TX, WS-X6704-10GE, WS-X6708-10GE-3C, WS-X6708-10GE-3CX, WS-X6748-SFP)

In Cisco Catalyst 6513, the dual fabric slots must be inserted in the module 9 - 13.
-WS-X6816-GBIC
- WS-X6748-GE-TX
- WS-X6704-10GE
- WS-X6708-10GE-3C
- WS-X6708-10GE-3CX
- WS-X6748-SFP
Only 9 - 13 are dual fabric as oposed to 1-6 which are single fabric.For the Cisco Catalyst 6509, all the slots are dual fabric.