Solved: Missing RAM slot in EliteBook 8540p - HP Support Community - 1800127
How to replace the drive bay in a HP 2530p - YouTube
How to Upgrade RAM in Your HP Laptop (with RAM underneath keyboard) - YouTube
2GB DDR2-800 (PC2-6400) RAM Memory Upgrade for the Compaq HP EliteBook 2530p (NJ885UC#ABA) at Amazon.com
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8GB 2X4GB Memory RAM for HP EliteBook 2530P 200pin 800MHz PC2-6400 DDR2 SO-DIMM Black Diamond Memory Module Upgrade - Walmart.com
Removing RAM from HP Elitebook 6930p - iFixit Repair Guide
8GB DDR4 RAM Memory Upgrade for HP All-in-One Sprout Pro (PARTS-QUICK) - Walmart.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