Hello Everyone ! I hope this will help those who are looking to upgrade the SSD of Acer R15 . I have Acer r5-571tg-78g8. I have successfully booted Windows 10 OS using PCIE NVME M.2 256 GB SSD. Below is the link for the Gigabyte SSD that I used. I am getting awesome speed now.
I used Easeus partition master software and selected the option Migrate OS>>then in boot menu change the sequence to give priority to the New SSD>>Restart>>It's working flawlessly.
Link for the SSD
https://www.gigabyte.com/Solid-State-Drive/GIGABYTE-NVMe-SSD-256GB#kf- Form Factor: M.2 2280
- Interface: PCI-Express 3.0 x4, NVMe 1.3
- Total Capacity: 256GB*
- Sequential Read Speed : up to 1700 MB/s**
- Sequential Write speed : up to 1100 MB/s**
- HMB (Host Memory Buffer) supported
- TRIM & S.M.A.R.T supported