2GB DDR2-800 (PC2-6400) RAM Memory Upgrade for the Compaq HP EliteBook 2530p (NJ885UC#ABA) at Amazon.com
HP Laptop EliteBook Intel Core 2 Duo SL9400 (1.86GHz) 4GB Memory 250GB HDD Intel GMA 4500MHD 12.1" Windows XP Professional (available through downgrade rights from Genuine Windows 7 Professional) 2530 - Newegg.com
2GB [1x2GB] Memory RAM Upgrade for the Compaq HP EliteBook 8530p, 8530w, 8730w | eBay