Thank you for viewing. This item is considered junk as the power has not been confirmed. Please understand that this is a used item. Feel free to ask if you'd like to negotiate the price. Product Details--------------------------------------------- This is a 4GB PC3-12800U memory module with a 1600MHz data rate, a high-performance memory module made by Elixir. - Brand: Elixir - Model: W3U1600HQ-4G - Model: M2X4G64CB8HG9N-DG - Memory Capacity: 4GB - Memory Type: PC3-12800U - Data Rate: 1600MHz - Model: W3U1600HQ-4G - Memory Capacity: 4GB This is a set of 4 x 4GB modules.