Not sure if it ever saw the light of day though.

https://www.pcgamer.com/asus-develops-a ... pter-card/PC Gamer wrote:A Youtuber by the name of Bing (via Anandtech) posted a video (in Mandarin) that explains the concept and shows off a prototype in action. The idea is simple. Take a stick of DDR4 memory, place it onto the converter card, and insert it into a motherboard’s DDR5 slot. However, if the idea is simple, in an engineering sense, it’s far more complicated.