I recently purchased a 17 inch, 1.5 GHZ Powerbook.  It came from Apple
with 512 memory.  The System profiler said the memory was in slot
0/STANDARD.  I added a 1GB modual in the other available slot.  It is
not Apple factory memory but it seems to work fine.  However, the
system profile says the memory is in slot 1/REVERSED.  What does that
mean (REVERSED). Is this memory really working?  Thanks.  WHK

Hello.

"Reversed" is normal and merely refers to the name of the memory slot.  

For your Powerbook, the System Profiler's Memory Overview calls the
first slot "Standard" and the second slot "Reversed."


From various Mac messageboards:

"SODIMM0/J20STANDARD
SODIMM1/J23REVERSED
I'm just wondering if its normal for the second slot to say "reversed."
...yea, that's normal."
http://forums.macrumors.com/archive/index.php/t-31162.html

"BTW "reversed" is normal in a PB - it just refers to the layout of the RAM slots."
http://216.239.57.104/search?q=cache:BFaSb83Czx4J:forums.macrumors.com/archive/topic/41198-1.html+SODIMM1+REVERSED&hl=en


The Memory Overview would called the slot "Reversed" even if it were empty. See:

" Location Type Size
SODIMM0/J20STANDARD DDR SDRAM 512 MB
SODIMM1/J23REVERSED empty "
http://www.faq-mac.com/mt/archives/003333.php


The bottom line is that if you look at "About This Mac" in the Apple
Menu, and it says that you've got the right amount of memory, then
it's really working.

---------
search strategy:
"memory overview" reversed powerbook

I hope this helps.  If you have any questions, please let me know via
the "request clarification" feature. Thanks.

I'm going to like using this service more often.  Great response and
superfast. Thanks.  WHK

Sorry for omitting a word above:

"The Memory Overview would HAVE called the slot..."