This RAM is suitable for DDR4 PC4-2666 desktop computers, compatible with Intel, AMD motherboard. The large capacity of 4G, 8G and 16G provides powerful performance and storage space. Built-in high-quality chips can achieve stable performance and high-speed operation. Features: 1. It is suitable for DDR4 PC4-2666 desktop computers, compatible with Intel, AMD motherboard. 2. Built-in high-quality chips can achieve stable performance and high-speed operation. 3. The high memory speed of 2666MHz improves the speed of the computer and brings convenience to your life. 4. The large capacity of 4G, 8G and 16G provides powerful performance and storage space for daily reading and writing. 5. High quality circuit module board, effectively avoid corrosion and abrasion, so it is durable and easy to carry. Specification: Condition: 100% Brand New Type: DDR4 Memory Frequency: 2666MHZ Memory Capacity: 4G, 8G, 16G Compatibility: Full Compatibility (Intel, AMD) Broadband: PC4-2666 Memory Voltage: 1.2V Pin Number: 288pin Size: Approx. 13.30 * 3.10 * 0.30cm / 5.2 * 1.2 * 0.1in Weight: 25.60g / 0.9oz Package list: 1 * RAM Note: RAM types include SD, DDR, DDR2, DDR3. Please refer to the following list to know what memory your computer has installed and what memory you need to buy. If you do not know which memory is suitable for your computer, please use software testing to see what memory your computer needs. (In Baidu search bar enter: "CPU-Z download" search a CPU-Z software and download it, then decompress the software), run the software after looking at the "SPD" option maximum broadband column, you will see "PCxx00", as follows: PC2100 is DDR 266 memory PC2700 is DDR 333 memory PC3200 is DDR 400 memory PC4200 is DDR2 533 memory PC4300 is DDR2 533 memory PC5300 is DDR2 667 memory PC6400 is DDR2 800 memory PC8500 is DDR3 1066 memory PC10700 is DDR3 1333 memory PC12800 is DDR3 1600 memory Memory DDR, DDR2 and DDR3 are not in common use to each other, slot sockets are also different. In order to avoid damage to memory and motherboard, please not to insert forcibly. If memory appears some faults, such as blue screen, crash, restart and alarm ringing, etc. Please follow the following methods one by one to operate, if not work, it is incompatible. 1. Memory is not inserted properly or golden finger are oxidized. Rub the golden finger of the memory with an eraser and insert it again, or replace the slot. 2. There is much dust or oxidation in the slot. Clean it with a brush and washboard water. 3. Memory is incompatible, replace the memory. 4. CMOS may be without discharging and back to factory settings ( remove motherboard battery and then loaded back). 5. Motherboard is incompatible with CPU, try changing CPU. 1、It is suitable for DDR4 PC4-2666 desktop computers, compatible with Intel, AMD motherboard. 2、Built-in high-quality chips can achieve stable performance and high-speed operation 3、The high memory speed of 2666MHz improves the speed of the computer and brings convenience to your life. 4、The large capacity of 4G, 8G and 16G provides powerful performance and storage space for daily reading and writing. 5、High quality circuit module board, effectively avoid corrosion and abrasion, so it is durable and easy to carry.