• Part number HMA851S6CJR6N-VK • 4GB, PC4-21300, 2666 MHz, non-ECC unbuffered, 260-pin SODIMM, 1Rx16 single rank, 1.2 V  • CL19  • Date code 1846 (week 46, 2018) Fits laptops, mini PCs and NUCs taking DDR4 SODIMM. Will clock down to 2400 or 2133 automatically if your system runs slower or if paired with a slower stick. Note this is a 1Rx16 module rather than the more common 1Rx8. Works fine in the vast majority of systems, but a small number are fussy about x16 organisation, and mixing it with an existing x8 stick can occasionally cause a system not to POST. Check your machine’s supported memory list if unsure.
