Amazon.com: Satechi USB C Slim Dock for 24” iMac with Tool-Free Enclosure for M.2 PCIe NVMe and SATA SSDs– USB C Data Port, USB A, 2 USB 2.0, Micro/SD Card Reader (Silver) :
Amazon.com: A-Tech 32GB Kit (2x16GB) RAM for Apple iMac & Mac Mini (2018, 2019 & 2020) | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade : Electronics
Amazon.com: Apple iMac 27" with Retina 5K Display, 3.3Ghz 6-Core Intel i5, 8GB RAM, 512GB SSD, AMD Radeon Pro 5300 4GB, Mid 2020 : Electronics
Amazon.com: Apple iMac 27-Inch Desktop, 3.4 GHz Intel Core i7 Processor, 16 GB memory, 1TB HDD (Renewed),macOS High Sierra : Electronics
Amazon.com: Apple iMac 27" with Retina 5K Display, 3.3Ghz 6-Core Intel i5, 8GB RAM, 512GB SSD, AMD Radeon Pro 5300 4GB, Mid 2020 : Electronics