Primarily, the Asus RTX 4060 Ti 8G with M.2 slot is made for PCIe 4.0 and PCIe 5.0 2280 SSDs, but with an adapter, it can somewhat use an RTX 4090 as an eGPU.
Asus adds an SSD slot to its Dual 4060 Ti gaming GPU, delivering up to 12GB/s of SSD performance from the GPU — M.2 port also allows using RTX 4090... : Read more
Asus adds an SSD slot to its Dual 4060 Ti gaming GPU, delivering up to 12GB/s of SSD performance from the GPU — M.2 port also allows using RTX 4090... : Read more