Best Buy: CORSAIR VENGEANCE PRO 16 GB (2PK x 8GB) 4000MHz DDR4 C18 DIMM Desktop Memory with RGB lighting Black CMW16GX4M2Z4000C18
Thermaltake TOUGHRAM RGB White DDR4 4000MHz 16GB (8GB x 2) 16.8 Million Color RGB Alexa/Razer Chroma/5V Motherboard Syncable RGB Memory R022D408GX2-4000C19A at Amazon.com
TOUGHRAM Z-ONE RGB Memory DDR4 4000MHz (8GB x 2)
TOUGHRAM Memory DDR4 4000MHz 16GB (8GB x 2)
Patriot Viper Elite II DDR4 16GB(2 x 8GB) 4000MHz Kit at Amazon.com
G.Skill Trident Z RGB 16GB (2 x 8GB) 288-pin DIMM DDR4 4000 MHz CL18 RGB LED Memory (F4-4000C18D-16GTZR) - Bleepbox
64GB Corsair Vengeance RGB Pro DDR4 4000MHz PC4-32000 CL19 Octuple Channel Kit (8x 8GB) Black