I have 4GB RAM in my computer. Can I add another RAM of 8GB in the second slot? Will it perform smoothly? - Quora
HP 15.6" Laptop, Intel Pentium Silver N5000, 4GB RAM, 500GB HD, Windows 10 Home, Scarlet Red, 15-dw0081wm - Walmart.com
HP Desktop Computer Bundle Windows 10 Intel 2.13GHz Processor 4GB Ram 250GB Hard Drive with a 17" LCD Monitor Wifi, Keyboard and Mouse - Refurbished - Walmart.com
Can I use 4GB And 8GB RAM together? - Talk Radio News
Windows 10 using 4GB reserved RAM - Microsoft Community