From Amazon
HyperX Impact HX426S15IB2/8 Memory 8GB 2666 MHz DDR4 CL15 SODIMM
BuyKingston
HyperX Impact HX426S15IB2/8 8GB DDR4 2666Mhz Non ECC Memory RAM SODIMM
Novatech
Kingston HyperX Impact RAM Module - 8 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - CL15 - 260-pin - SoDIMM