OWC Data Doubler - Replace Mac Optical Drive with an SSD
OWC SSD Upgrade Kits For MacBook Pro (2008 - 2009)
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
Amazon.com: ORICO 1T Mini M.2 NVME Portable SSD External Solid State Drive Hard Drive Up to 940MB/s with 3D NAND/USB 3.1 Gen 2 Type C for Laptop Mac Phones and More (SSD