My mid-2010 polycarbonate “Stormtrooper” MacBook! Upgrades include macOS Catalina, a 250GB SSD, 16GB RAM, MacBook Pro keyboard keys, a higher-capacity battery, and a newer wireless card / antenna setup that supports AirDrop. :
13-inch MacBook Pro Mid 2010 Data Doubler 2nd Hard Drive/SSD Installation Video - YouTube
MacBook Air 13" Late 2010 Solid-State Drive Replacement - iFixit Repair Guide
The SSD: Not Half Bad - Apple's 2010 MacBook Air (11 & 13 inch) Thoroughly Reviewed
512GB SSD Solid State for 11" & 13" MacBook Air Late 2010 Mid 2011 /A1370 A1369 | eBay