http://interlink.tsbohemia.cz/notebook-hp-probook- 4520s-15-6-led-core-i5-480m-4gb-320gb-ati-hd6370-s -1gb-dvd-rw-wifi-bt-fp-cam-fp-w7p-64bit-brasna_d11 6629.htmlJe tam uváděno 2+2 GB