RAM compatibility PC2-4200/PC2-5300

[Nebersek]

Hello,
I have a laptop Acer Aspire 5102WLMi 2007 with Vista Home Premium Edition. I decided to 2GB of RAM to 4 GB (I have 64-bit Linux). I visited the some site and I noticed that all were compatible kits PC2-4200; But too late! I had already bought 2x2 GB PC2-5300 because I didn't knew PC2-4200 2GB
Is my PC is compatible with these kits?
Thank you for your response

[Curt]

hi,
normally consistent (I think they works). What is the manufacturer name of the ram that you bought?

[Nebersek]

These are of Kingston. Other opinions?
And if it works, the kits turns it into 667 Mhz or 533 Mhz? for which one , i should go for.

[Curt]

Choose as your current RAM speed : 533 Mhz