  Looks like HMT351U7AFR8C there is a H9 TO AA at the end of that. Hynix 4GB 2Rx8 PC3 - 10600E 09 - 10 - EO   Yes, it is a UDIMM. It is Dell part # T192H. Thanks
Hello, We currently have a similar config, we have 6 x 4GB of RAM totaling 24GB. We would like to get as close to 64GB as possible. I found matching 4GB sticks on Newegg, but that would only get us up to 48GB if I added another 6 in the empty slots. I was looking at either doing a full replace of some 8GB sticks, but they are 2rX4, where what we have installed now is 2rx8. I am wondering if I bought 6 of those 8GB sticks, if I could use them in conjunction with what we have now if I matched config to channel? Currently we have sticks in slots A1-A2-A3 and B3-B2-B1. Wondering how best to go about it and still be optimal.
R610 memory install/upgrade