HP COMPAQ DC7900 TW SSD120GB Desktop PC Intel® Pentium® E5300 Processor 8GB DDR2 Windows 10 Pro
KP721AV HP Compaq dc7900 Base Model Small Form Factor PC - Infracko
2GB Stick for HP Compaq DC Series Desktop dc7800 dc7900 Ultra-Slim. SO-DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. **Ultra Slim Model at Amazon.com