MICRON 4GB DIMM DDR3 PC12800 (1600) UNBUF 1.5v 2RX8 240P 512MX64 256mX8 CL11 8k MT16JTF51264AZ-1G6M1 Buying memory can be tricky. If you are unsure if this is the correct part for your system, please contact the seller. Please provide the make, model and/or service tag of your system or motherboard, or the part number of your current RAM can be used to help verify compatible memory. Note: Listing is for 1 module. If an image shows more than 1 module, it is intended to show both the front and back of the module or to otherwise show the quality of our inventory.