Hi, I'm Jewel with Kingston Technical Support and would like to offer some clarification. Our currently manufactured memory, including the HyperX Fury line, is compatible with Intel 6-series chipsets and later. The DH55TC has an Intel H55 chipset which is part of the Intel 5-series chipsets. As such, the HyperX Fury memory is not compatible with your system and we do not currently offer any memory that would be compatible with your system. You can try looking online for recently discontinued part numbers like KVR1333D3N9HK2/8G or KVR1333D3N9H/4G which are compatible with your motherboard. If you are unable to return the memory to your place of purchase, please contact us and we will do our best to work with you. Please check
http://www.kingston.com/company/contacts to reach support in your area.
Thank you for selecting HyperX.