DELL Vostro 230 - RAM problem

Hi Folks,

I'm new here and this is my very first post. I'm unsure if this question has been posted already so apologies in advance if it has.

Basically, I have a DELL Vostro tower that currently has 1GB RAM. I bought a 2GB Crucial RAM DDR3L stick which i thought was compatible. However when i insert the RAM and swich on I get a double beep.

Can anyone please advise me what i'm doing wrong here as I really dont know what to do next.

I was thinking the problem may be that the RAM is DDR3L instead of DDR3, however i'm really not sure.

Any help from anyone would be very much appreciated.

Thank you.