hi,

> Hello,
> 
> I apologize for second batch of questions but i can't find the answers 
> anywhere with Google yet i'm sure many of you know them:
> 
> 1: what is the brown slot directly between PCI riser slot and 4x DIMM
> slots on the motherboard ? It is unoccupied, it has narrow contacts
> (like PCI, not like ISA for example).

maybe here

http://sunsolve.sun.com/handbook_pub/Systems/U5/U5.html

you'll find the answers...

> 
> 2: how do i determine revision of my motherboard ? I recall reading
> somewhere that in order for CPU to be replaced motherboard must support
> it. I can probably fin the page listing matching mobo&CPU pairs again
> but i can't find mobo type anywhere ?!

http://sunsolve.sun.com/handbook_pub/Systems/U5/component.system_board.html

> 
> 3: Is Sun floppy standard MFM PeeCee floppy ? Can i replace defunct Sun
> floppy with PC floppy in my Ultra 5 ?

http://sunsolve.sun.com/handbook_pub/Devices/Removable_Media/RMVBL_2Dens_Flop.html

> 
> 4: is there any particular order in which PCI slots should be filled ? I
> plan to put in a SCSI controller as advised earleir, together with 1 10k
> drive (i intended to plce the controller in the single slot right behind
> the floppy drive - will that work ?).

my U10 does not really care (SCSI & three additional NICs)

> 
> 5: PSU looks pretty much like your regular ATX PSU; can i use PC PSU as
> replacement if this one bites the dust ?

http://sunsolve.sun.com/handbook_pub/Systems/U5/component.power.html

maybe you should contact mitec to ask if there's something special on this PSU

> 
> 6: what's the purpose of that bay door-like thingy right above floippy
> drive ?

AFAIR it was for some smartcard or PCMCIA reader stuff; did not actually see a machine w/it installed.

> 
> Blaz Antonic

HTH,

timo
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