HP ProBook 4540s Core i5 4GB RAM 500 HDD Features:<br /> Core i5<br /> 4GB RAM<br /> 500 HDD HP ProBook 4540s Core i5 4GB RAM 500 HDD Features: Core i5 4GB RAM 500 HDD. Share on Twitter Share on Whatsapp Share on Telegram Share on Facebook Share on Reddit Share on Hacker News Share on Tumblr Share on LinkedIn Email