HP Compaq 6200 Pro MT Desktop PC - Intel Core i3-2100 Dual-Core 3.1GHz Processor, 4GB DDR3, 250GB HDD, Integrated Graphics, 10x USB 2.0, VGA, DisplayPort, Windows 10 Pro 64-bit, Refurbished - PC2-0948 at TigerDirect.com
OCZ ReaperX HPC 4GB PC2-6400 Review - Phoronix
MemoryMasters 4GB DDR4 2400MHz SO DIMM FOR Gigabyte GB-BSi5HT-6200 - Newegg.com
511-1151-01 Sun 2GB DDR2 Fully Buffered Server Memory
Used - HP Compaq 6200 Pro, MT, Intel Core i5-2400 @ 3.10 GHz, 8GB DDR3, NEW 500GB SSD, DVD-RW, No OS - Walmart.com
1GB RAM Memory for Foxconn 900 Motherboard Series 975X7AB-2.0-8EKRS2H 240pin PC2-4200 DDR2 DIMM 533MHz Black Diamond Memory Module Upgrade - Newegg.com