Note：Please confirm what memory your motherboard supports before buying. Packing list: 1 x X-Star DDR4 Memory RAM brand:X-Star Scope of application: PC Frequency: 2400Mhz/ 2666Mhz Memory type: DDR4 Capacity:4G/8GB Working voltage: 1.2V Interface Type: 288-pin DDR4 DIMM Timing: 2666 CL 19-19-19-43/2400 CL 16-16-16-39 Product size:133.4*31.3 mm Featured memory particles,ensure that particles have excellent electrical performance, operating performance, and the main AC parameters.100% multistage testing with outstanding performance and efficiency,International Standard Quality Cost-effective DDR4 RAM, speed is fluent, cool fast, less power consumption;significantly enhance transmission speed,Frequency up to 2666MHZ;Good support multi-line multitasking operating system, big game to run smoothly , bring you a zero delay experience,bring spray speed type experience. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.