1.) Is it possible to stack the 6610 using one of the 40G ports and one breakout port ?
tried that before, but i'm only getting the stack-trunk work with one 40G and one of the 10G breakout ports (e.g. 1/2/1 and 1/2/2, not 1/2/1 & 1/2/2 to 1/2/5).
2.) What does the led "MS" mean ? On one of my stack members, its green, and led on the other one is orange.
nvmd. i read the hardware installation guide, its the stacking role, green -> master, orange -> standby
3.) My 2nd psu from my newly arrived switch is revving up and down, i tried to switch the psus but nothing changed. the 2nd fan tray (the left one, looking from behind) is also not working (no green light), is my board damaged ?

Its the left side, left psu revving up and down, left fan not working, anything damaged ? Can it be debugged ?
Here is the show chassis cmd (i deleted the mac addresses and X'd out the serials), stack unit 1 is my perfectly working 24p-e, stack unit 2 the new 48-e, i've plugged the second fan tray in the 24p-e, so currently the 48-e is only running one fan tray:
Code:
SSH@sw-core#sh chassis
The stack unit 1 chassis info:
Power supply 1 (AC - PoE) present, status ok
Model Number: 23-0000142-02
Serial Number: XXX
Firmware Ver: A
Power supply 1 Fan Air Flow Direction: Front to Back
Power supply 2 not present
Fan 1 ok, speed (auto): [[1]]<->2
Fan 2 ok, speed (auto): [[1]]<->2
Fan controlled temperature: 46.0 deg-C
Fan speed switching temperature thresholds:
Speed 1: NM<----->78 deg-C
Speed 2: 73<-----> 87 deg-C (shutdown)
Fan 1 Air Flow Direction: Front to Back
Fan 2 Air Flow Direction: Front to Back
MAC 1 Temperature Readings:
Current temperature : 41.5 deg-C
CPU Temperature Readings:
Current temperature : 40.0 deg-C
sensor A Temperature Readings:
Current temperature : 26.5 deg-C
sensor B Temperature Readings:
Current temperature : 39.0 deg-C
sensor C Temperature Readings:
Current temperature : 20.0 deg-C
sensor D Temperature Readings:
Current temperature : 18.0 deg-C
stacking card Temperature Readings:
Current temperature : 46.0 deg-C
Warning level.......: 84.0 deg-C
Shutdown level......: 87.0 deg-C
Boot Prom MAC :
Management MAC:
The stack unit 2 chassis info:
Power supply 1 (AC - Regular) present, status ok
Model Number: 23-0000144-01
Serial Number: XXX
Firmware Ver: B
Power supply 1 Fan Air Flow Direction: Front to Back
Power supply 2 (AC - Regular) present, status ok
Model Number: 23-0000144-01
Serial Number: XXX
Firmware Ver: B
Power supply 2 Fan Air Flow Direction: Front to Back
Fan 1 ok, speed (auto): [[1]]<->2
Fan 2 not present
Fan controlled temperature: 58.0 deg-C
Fan speed switching temperature thresholds:
Speed 1: NM<----->80 deg-C
Speed 2: 75<-----> 85 deg-C (shutdown)
Fan 1 Air Flow Direction:Front to Back
MAC 1 Temperature Readings:
Current temperature : 44.5 deg-C
MAC 2 Temperature Readings:
Current temperature : 58.0 deg-C
CPU Temperature Readings:
Current temperature : 57.5 deg-C
sensor A Temperature Readings:
Current temperature : 50.5 deg-C
sensor B Temperature Readings:
Current temperature : 48.5 deg-C
sensor C Temperature Readings:
Current temperature : 37.5 deg-C
stacking card Temperature Readings:
Current temperature : 55.0 deg-C
Warning level.......: 81.0 deg-C
Shutdown level......: 85.0 deg-C