My first MacBook upgrade since my 2010 white unibody. Two Windows laptops in between that caused nothing but frustration. 2020 MBP 13”/10th gen/i5/16 gb RAM/512 gb SSD. It's great to be back!
MacBook Pro 13" Unibody Mid 2009 RAM - iFixit
How to upgrade the RAM on your 13-inch MacBook Pro
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 RAM for Mac Book (Mid 2010 13-inch), Mac Book Pro (Mid 2010 13-inch), iMac (Late 2009 27-inch), Mac Mini (Mid 2010) MAC RAM : Electronics
A-Tech 4GB PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com
6GB Memory for 2008-2010 MacBook Pro, iMac, and Mac mini
How to upgrade RAM (up to 8GB) on MacBook 13 inch (White) Late 2009 & Mid 2010? | TechLunar
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com