HP 16GB (1x16GB) Dual Rank x4 PC3L-10600R (DDR3-1333) Registered CAS-9 Low Voltage Memory Kit/S-Buy 647901-S21 at Amazon.com
Mushkin Essentials – DDR3 Laptop DRAM – 8GB Memory Single SODIMM – DDR3L-1600MHz (PC3L-12800) CL-11 – 204-pin 1.35LV Notebook RAM – Low-Voltage – (992038) at Amazon.com
HP 8GB (1x8GB) Dual Rank x4 PC3L-10600R (DDR3-1333) Registered CAS-9 Low Voltage Memory Kit at Amazon.com
8GB DDR3-1600 PC3-12800 SODIMM Low Voltage SNPN2M64C/8G A7022339 Equivalent at Amazon.com
CMS 16GB (2X8GB) DDR3 12800 1600MHz ECC Registered DIMM Memory Ram Upgrade Compatible with Lenovo® ThinkServer RD540 DDR3 for Server Only - B33 at Amazon.com