Question 1

This item is brand new, never used by others?

Accepted Answer

The item I received was brand new, still in original sealed package. I did not use it because after I received it, I found out it would not work in my computer.

Question 2

will this be compatible with my macbook pro 13" 2.26 duo core I have from mid 2010?

Thanks,

-Adam

Accepted Answer

You need to check your specs for the laptop. Check max memory each slot will support and the buss clock speed. I bought this for a HP laptop not Mac I think the form factor of the dimm is different. 
Do your homework. Of course if it does not work return it.

Question 3

hi! will it work on my old asus k52f ?

Accepted Answer

I don't know. Your best bet is to use the memory finder or call tech support.

Question 4

Will these work with Lenovo W 500 Intel Core 2 Duo Laptop ( Intel PM 45 Express Chipset ), System Flash Memory: Intel Turbo Memory ( 2GB ), Processor: T 9600/ 2.8 GHz ? Thanks

Accepted Answer

To all "will this fit / work" questions: To make sure components are inter-operable there are DDR memory specifications that detail voltage, speed, number of PINs on the SO-DIMM, etc. This means that ANY module matching these specifications SHOULD fit and work in your laptop, regardless of brand. For example, my Dell Alienware laptop takes DDR-3 204-PIN SO-DIMMs up to 1600 (DDR3 1600 is another way of saying PC3 12800--I know, confusing). This means that you should research your laptop online and determine the type of memory you need. As long as you buy memory that matches that specification (i.e., "DDR3 1600" or "DDR2 667") you should be fine. One another note: as long as you buy the correct DDR version (DDR2, DDR3) for your laptop, you can buy a FASTER module (1600 vs 1333, etc.) and it will still work, but it will slow down to your laptop's maximum speed (in this case, 1333). The only thing to really be certain of is that you're buying a LAPTOP memory module ("SO-DIMM"), as they are different (smaller) from that of desktops. Good luck!

Question 5

is it compatible with toshiba satellite l555-123?

Accepted Answer

Yes.  The kit works well.

Brand	CORSAIR
Series	ValueSelect
Model	CM3X8GSDKIT1066

Capacity	8GB (2 x 4GB)
Type	204-Pin DDR3 SO-DIMM
Speed	DDR3 1066 (PC3 8500)
CAS Latency	CL7
Timing	7-7-7-20
Voltage	1.50V
Buffered/Registered	Unbuffered
Multi-channel Kit	Dual Channel Kit

CORSAIR ValueSelect 8GB (2 x 4GB) 204-Pin DDR3 SO-DIMM DDR3 1066 (PC3 8500) Laptop Memory Model CM3X8GSDKIT1066

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Item#: N82E16820233081