It's a conversion PCB to use with an enclosure like https://www.aliexpress.com/item/32731090429.html
splitting the 22 pin SATA to a 7pin SATA (no 3d model in the render), and using USB Type-C to power it
for use in combination with an msata to sata board that doesn't provide it's own power: https://www.aliexpress.com/item/4000516963896.html
which will be used to give terra, the pixie.town beefy server an SSD upgrade :)