When ordering, I also clickte to an article that allegedly also other customers bought with the N220. It was the 2 GB memory: Kingston 2GB DDR2 PC2-5300 CL5 memory. The price was good and everything seemed ok. After installation of the memory and the installation of various programs, such as Office 2007 and Skype, it went to the testing. With Skype, version 5.1 is a connection was möglch, but the phone and also with video came the message, "power of the device is not sufficient, connect Other Applications" something like that. I do not understand the world anymore and began all the unnecessary programs from Samsung, all games, etc. to de-install - even mitgestartete resident services by Samsung and Mircosft. No significant change and also the hotline of Samsung brought no solution (I only should carry out the recovery, so'n baloney). Then I removed the 2 GB memory and installed the supplied by Samsung 1GB. And lo and behold, everything perfect. Reason: the bought Kingston RAM is specified only with 666 MHz bus speed, according to Samsung, it must be a 800 MHz module but. So returned memory and a matching DDR2-800 (PC2-6400) reappointed.