On my router 7609, I've these modules as follows:
slot3: SFM 16 port 1000mb GBIC
slot4: 48 port 10/100mb RJ45
slot5: Sup engine 720
slot7: SFM 48 port 10/100mb RJ45
slot8: 8 port 1000mb GBIC enhanced QoS
slot9: CEF720 4 port 10G Ethernet
So, as you see, I can insert a new card in slot 2 or slot 6 since they're available.
I'd like to know if slot 6 is reserved for redundant sup card? In this case, slot 2 is best suited. Am I right?
How about slot 1?
Thanks.