Bought this to increase my 4 years old Thinkpad E470 laptop's memory (from default 8 GB DDR4 to 24 GB DDR4 post upgrade). The product is a genuine one and came in Samsung sealed pack. It works as advertised, matching well with my existing Samsung single channel 8GB DDR4 module (despite the product being dual ranked 16 GB Module). It's been 3 days since I installed it into my laptop, so far no issues.