Sorry, I wanted to say in the first post 2 x 8 GB. This should work right ?

Thank you!

Hi noname25,

The memory mentioned will not work with the system. The maximum memory compatible on a single slot is 4 GB.

Dell™ XPS™ L502X DIMM Configuration
Slot A	Slot B	Total Memory
2048 MB	None	2048 MB
2048 MB	1024 MB	3072 MB
2048 MB	2048 MB	4096 MB
4096 MB	2048 MB	6144 MB
4096 MB	4096 MB	8192 MB

Click the link mentioned below for the compatible memories:

http://dell.to/YzqoOy

Thanks & Regards
Manshu S
#iworkfordell

What about this post ?

en.community.dell.com/.../19426345.aspx

Hi noname25,

Thank you for the reply.

In the post mentioned by you the maximum memory connected to a single slot is 8 GB and the memory mentioned on the first post is of 16 GB so it may not function.

4 GB is the maximum memory recommended on a single slot on Dell XPS l502x.

Also, you may refer to page 94 of the manual by clicking the link mentioned below:

http://bit.ly/R1Vz5s

Please ensure you update the BIOS before putting the new memory. Please click the link mentioned below which will take you to the drivers website:

http://dell.to/QjjZDA

Enter the Service Tag of the computer and choose the Operating System installed on the computer. Please update the latest version of BIOS available.

NOTE: Ensure that the battery is more than 30% charged and AC Adapter is connected during the BIOS update.

Hope it helps.

Thanks & Regards
Manshu S
#iworkfordell

Hi noname25,

It may work however, it is not recommended on Dell XPS l502x.

Thanks & Regards
Manshu S
#iworkfordell