I'm planning to purchase a Crucial M4 256G SSD.
There are 2 versions though, 7mm and 9.5mm, at the same price on Newegg.com
My current laptop is 9.5mm SATA II. However, I plan to purchase a new laptop as soon as Ivy Bridge quad-core laptops (the 35W i7-3612QM interests me most) are available, which will certainly have SATA III (and I plan to use a legacy HDD in optical bay). However, I'm not sure if it will come with a 7mm or 9.5mm slot.
My question is, will a 7mm SSD fit in a 9.5 mm slot? Is there any disadvantage?
(BTW, comments are welcome if you feel Crucial M4 is not a good choice. I chose this after I read rumors about SandForce. I also do not see any reason to switch to Intel 320 Series as Crucial seems to have good reliability as well.)
53 Answers
Yes the 7.5mm, 9.0mm will fit into all 2.5" standard SATA bays, because the side screws will align the SATA port to the port on the motherboard. The same applies for thicker HDD's - but not all thicker ones will fill ie- wont be possible to screw the cover back on.
It is highly likley (only on some models of Acer do not use this) that there will be a caddy. You will need to put this on the SSD to maintain the correct alinement's and avoid damage to SATA port.
Then the cover that goes over the HDD bay, will usually keep the cradle in place, stopping the drive from falling out of the connector.
2P.S.: Enjoy the SSD. I love the speed improvement, especially on loading apps and games. Amazing!
P.S.S: Recently I tried to fit a 9.0mm into a Dell netbook type thing. It did fit, just but the lid did not close and then I noticed the dell connector did not slot in. So please check in the manual to absolute sure that it will accept a 9.00mm
This is a good discussion - just one thing to add:
In Dell Precision laptops, I've found that the secondary drive bay works really well for BOTH the 7mm and 9.5mm drives but the primary drive bay doesn't. But, NEW Dell machines are shipping with a ~2mm rubber spacer.
So, why many systems do work - when the drive is screwed in (like in the secondard drive bays) it doesn't work as well in the primary. I had to create a shim (which I did out of some left-over "pluck and pull" foam from a Pelican case).
I wish the rubber spacers were easy to find though. I'd have bought one for sure!
hth, k
The connectors and screwholes are in the same place. So in most cases it's fine to fit a thinner driver in a laptop that is expecting a thicker drive.
However, some laptops support the drive in part through enclosing it in a space that is exactly the right size. Fitting a drive that is too thin without fitting some form of spacer can result in the drive not being mounted securely which could put stress on the connectors.
At least some SSDs come with a stick on spacer to avoid this problem. I don't know if the ones you are looking at do.
