Question has been solved.

1. Max RAM capacity per Acer's data sheet is 12 GB, therefore that module may not work. A 4GB module should work. Also, you should try to match the make and series of RAM you currently have installed as closely as you can (to avoid greater potential for instability).

2. Are you sure there's an empty PCIe slot for storage? I'm only reading of a single SATA connection.