Bottom door 690978-001, 60.4SJ02.002 HP ProBook 4540s Memory Board Cover. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation
HP ProBook 4540S 15.6" Laptop Core i3 2.40GHz 8GB RAM WebCam Win10 Pro – Coretek Computers
4GB DDR3L-1866 (PC3-14900) SODIMM SR x8 Memory RAM for HP ProBook 4540s
Arch Memory 8GB 204-Pin DDR3 1600 MHz So-dimm RAM for HP ProBook 4540s at Amazon.com
HP ProBook 4540s Intel i7 8gb Ram NO HDD/OS – I.E.T. INDUSTRIAL ANTONIO PRIETO – SINCELEJO, SUCRE
HP ProBook 4540s core i5 3rd gen 8GB Ram 500GB Hard Drive Windows 10 Pro 15.6”Laptop with charger in Excellent Working condition!!! Specification: *I for Sale in Aurora, IL - OfferUp
HP ProBook 4540S 15.6" Laptop Computer Intel Core i3-3110M 8GB RAM 256GB SSD Wi-Fi Windows 10 Pro - Walmart.com