AddOn 4GB DDR4 SDRAM Memory Module - For Computer - 4 GB (1 x 4GB) - DDR4-2666/PC4-21300 DDR4 SDRAM - 2666 MHz - CL15 - 1.20 V - Non-ECC - Unbuffered - 260-pin - SoDIMM - Lifetime Warranty

AddOn 4GB DDR4 SDRAM Memory Module - For Computer - 4 GB (1 x 4GB) - DDR4-2666/PC4-21300 DDR4 SDRAM - 2666 MHz - CL15 - 1.20 V - Non-ECC - Unbuffered - 260-pin - SoDIMM - Lifetime Warranty