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Amazon.com: Lenovo Ideacentre A540 23.8" FHD All-in-One Desktop, AMD Ryzen 5 Pro 4650GE, 16GB RAM 512GB PCIe SSD, Webcam, HDMI, Wireless Keyboard & Mouse, Windows 10 Pro, Black : Electronics
Amazon.com: Lenovo IdeaCentre 5i All-in-One Business Desktop, 23.8" FHD IPS Touchscreen, Intel Core i5-10400T, 16GB RAM, 512GB SSD, Webcam, HDMI, Wireless Keyboard&Mouse, Wireless Charger, Wi-Fi, Windows 11 Pro : Electronics
OFFTEK 16GB Replacement Memory RAM Upgrade for IBM-Lenovo IdeaCentre T540-15AMA G (DDR4-25600 (PC4-3200) - Non-ECC) Desktop Memory at Amazon.com