ADATA Premier DDR3 1333MHz 4GB Memory Modules (AD3S1333C4G9-R) at Amazon.com
4GB 240-Pin DDR3-1333 PC3-10600 UDIMM RAM for Western Digital My Cloud DL2100 | Arch Memory
1GB PC3-10600 DDR3-1333MHz 204-Pin SODIMM Laptop Memory Module AD73I1A0873EU Compatible Replacement Spare Part for Adata Compatible and Other Systems at Amazon.com
ADATA Premier Series 8GB (2 x 4GB) DDR3 1333 (PC3 10666) Desktop Memory Model AD3U1333C4G9-DRH - Newegg.com