Refurbished: Dell Precision M4500 15.6" Standard Laptop - Intel Core i7 720QM 1st Gen 1.6 GHz 8GB SODIMM DDR3 SATA 2.5" 500GB DVD-RW Windows 10 Pro 64-Bit Laptops / Notebooks - Newegg.com
Dell Precision M4500 Intel Core i7 CPU M 640 @ 2.80GHz, 4 GB RAM, 250 GB HDD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
2GB Team High Performance Memory RAM Upgrade Single Stick For Dell Precision M4500 M6400 M6500. The Memory Kit comes with Life Time Warranty. at Amazon.com
CMS 8GB (2X4GB) DDR3 10600 1333MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Dell® Precision Mobile Workstation M4500 - A29 System Specific Memory - Newegg.com
DVD burner player 9.5 mm SATA DU-8A3SH - 0PYC70 for DELL Precision M4500
Crucial Technology 8GB Upgrade for a Dell Precision M4500 System (DDR3 PC3-12800, Non-ECC,) at Amazon.com
A-Tech 16GB KIT (2 x 8GB) For Dell Precision Notebook Series Mobile Workstation M4500 Mobile Workstation M4500 (Quad Core) Mobile Workstation M4600 M. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory at Amazon.com