| Compaq 500B Microtower | 2 DDR3 DIMM slots | 4 GB | Upgradable | 5 |
| Compaq 505B Microtower PC | 2 DDR3 DIMM slots | 3 GB | Upgradable | 3 |
| Compaq 4000 Pro SFF PC | 2 DDR3 DIMM slots | 4 GB | Upgradable | 9 |
| Compaq 6000 Pro MT PC | 4 DDR3 DIMM slots | 8 GB | Upgradable | 24 |
| Compaq 6000 Pro SFF PC | 4 DDR3 DIMM slots | 12 GB | Upgradable | 28 |
| Compaq 6005 Pro MT PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 21 |
| Compaq 6005 Pro SFF PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 47 |
| Compaq 6200 Pro MT PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 32 |
| Compaq 6200 Pro SFF PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 50 |
| Compaq 8000 Elite CMT PC | 4 DDR3 DIMM slots | 8 GB | Upgradable | 21 |
| Compaq 8000 Elite SFF PC | 4 DDR3 DIMM slots | 12 GB | Upgradable | 35 |
| Compaq 8000 Elite USDT PC | 4 DDR3 DIMM slots | 6 GB | Upgradable | 12 |
| Compaq 8100 Elite CMT PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 17 |
| Compaq 8100 Elite SFF PC | 4 DDR3 DIMM slots | 16 GB | Upgradable | 28 |
| Compaq 8200 Elite AiO Business PC | 2 DDR3 SO-DIMM slots | 4 GB | Upgradable | 4 |
| Compaq 8200 Elite CMT PC | 4 DDR3 DIMM slots | 32 GB | Upgradable | 33 |
| Compaq 8200 Elite MT PC | 4 DDR3 DIMM slots | 10 GB | Upgradable | 11 |
| Compaq 8200 Elite SFF PC | 4 DDR3 DIMM slots | 32 GB | Upgradable | 86 |
| Compaq 8200 Elite USDT PC | 2 DDR3 SO-DIMM slots | 12 GB | Upgradable | 16 |
| Compaq dc5100 SFF | 4 DDR2 DIMM slots | 2 GB | Upgradable | 4 |
| Compaq dc5700 Microtower | 4 DDR2 DIMM slots | 6 GB | Upgradable | 12 |
| Compaq dc5700 Small Form Factor | 4 DDR2 DIMM slots | 2 GB | Upgradable | 4 |
| Compaq dc5750 Microtower | 4 DDR2 DIMM slots | 8 GB | Upgradable | 9 |
| Compaq dc5750 Small Form Factor | 4 DDR2 DIMM slots | 5 GB | Upgradable | 8 |
| Compaq dc5800 Microtower | 4 DDR2 DIMM slots | 8 GB | Upgradable | 15 |
| Compaq dc5800 Small Form Factor | 4 DDR2 DIMM slots | 8 GB | Upgradable | 34 |
| Compaq dc5850 Microtower | 4 DDR2 DIMM slots | 6 GB | Upgradable | 12 |
| Compaq dc5850 Small Form Factor | 4 DDR2 DIMM slots | 8 GB | Upgradable | 14 |
| Compaq dc7100 CMT | 4 DDR DIMM slots | 4 GB | Upgradable | 4 |
| Compaq dc7100 SFF | 4 DDR DIMM slots | 1 GB | Upgradable | 4 |
| Compaq dc7600 Convertible Minitower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 9 |
| Compaq dc7600 Small Form Factor | 4 DDR2 DIMM slots | 4 GB | Upgradable | 14 |
| Compaq dc7700 Convertible Minitower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 10 |
| Compaq dc7700 Small Form Factor | 4 DDR2 DIMM slots | 8 GB | Upgradable | 15 |
| Compaq dc7700 Ultra-slim Desktop | 3 DDR2 DIMM slots | 5 GB | Upgradable | 4 |
| Compaq dc7700p Convertible Minitower | 4 DDR2 DIMM slots | 3 GB | Upgradable | 4 |
| Compaq dc7700p Small Form Factor | 4 DDR2 DIMM slots | 6 GB | Upgradable | 4 |
| Compaq dc7700p Ultra-slim Desktop | 3 DDR2 DIMM slots | 3 GB | Upgradable | 3 |
| Compaq dc7800 Convertible Minitower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 9 |
| Compaq dc7800 Small Form Factor | 4 DDR2 DIMM slots | 8 GB | Upgradable | 16 |
| Compaq dc7800 Ultra-slim Desktop | 2 DDR2 DIMM slots | 4 GB | Upgradable | 3 |
| Compaq dc7800p Convertible Minitower | 4 DDR2 DIMM slots | 8 GB | Upgradable | 7 |
| Compaq dc7800p Small Form Factor | 4 DDR2 DIMM slots | 6 GB | Upgradable | 16 |
| Compaq dc7900 Convertible Minitower | 4 DDR2 DIMM slots | 8 GB | Upgradable | 26 |
| Compaq dc7900 Small Form Factor | 4 DDR2 DIMM slots | 8 GB | Upgradable | 38 |
| Compaq dc7900 Ultra-Slim Desktop | 2 DDR2 DIMM slots | 4 GB | Upgradable | 10 |
| Compaq dx2200 MT | 2 DDR2 DIMM slots | 2 GB | Upgradable | 8 |
| Compaq dx2300 Microtower | 2 DDR2 DIMM slots | 2 GB | Upgradable | 10 |
| Compaq dx2400 Microtower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 14 |
| Compaq dx2400 Microtower PC | 4 DDR2 DIMM slots | 8 GB | Upgradable | 16 |
| Compaq dx2420 Microtower | 2 DDR2 DIMM slots | 4 GB | Upgradable | 4 |
| Compaq dx2450 Microtower PC | 4 DDR2 DIMM slots | 4 GB | Upgradable | 3 |
| Compaq dx7400 Microtower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 3 |
| Compaq dx7500 Microtower | 4 DDR2 DIMM slots | 4 GB | Upgradable | 3 |
| Compaq Elite 8300 All-in-One PC | 2 DDR3 SO-DIMM slots | 4 GB | Upgradable | 3 |
| Compaq Elite 8300 CMT | 4 DDR3 DIMM slots | 32 GB | Upgradable | 39 |
| Compaq Elite 8300 MT | 4 DDR3 DIMM slots | 16 GB | Upgradable | 13 |
| Compaq Elite 8300 SFF | 4 DDR3 DIMM slots | 32 GB | Upgradable | 117 |
| Compaq Elite 8300 Touch All-in-One PC | 2 DDR3 SO-DIMM slots | 4 GB | Upgradable | 3 |
| Compaq Elite 8300 USDT | 2 DDR3 SO-DIMM slots | 16 GB | Upgradable | 24 |
| Compaq Pro 4300 SFF PC | 2 DDR3 DIMM slots | 8 GB | Upgradable | 8 |
| Compaq Pro 6300 All-in-One PC | 2 DDR3 SO-DIMM slots | 16 GB | Upgradable | 5 |
| Compaq Pro 6300 MT | 4 DDR3 DIMM slots | 24 GB | Upgradable | 49 |
| Compaq Pro 6300 SFF | 4 DDR3 DIMM slots | 16 GB | Upgradable | 73 |
| Compaq Pro 6305 MT | 4 DDR3 DIMM slots | 12 GB | Upgradable | 10 |
| Compaq Pro 6305 SFF | 4 DDR3 DIMM slots | 32 GB | Upgradable | 31 |