Operating System Not Included
This PC is sold without an OS installed.
Perfect for users who want to install their own software.
A stable, reliable personal computer is an absolute necessity in every business environment, big and small. Required to perform every day, the HP Compaq 4000 Pro includes proven PC modules and components designed to rigorous business PC standards.

Our Microsoft Authorized Refurbished (MAR) computers and laptops are now predominantly loaded with Windows 11 (Home or Pro), with limited remaining stock available in Windows 10. Please check your product option selections to ensure compatibility with your specific needs, including choosing between Pro or Home versions.

| Functionality | |
|---|---|
| Cosmetics |
All refurbished items are restored to full functionality, and their grades reflect only cosmetic condition. Lower-grade products may have more visible blemishes but are rigorously tested and cleaned to ensure identical performance and warranty coverage.
| Processor | Intel Celeron (E3400) 2.60GHz |
|---|---|
| Memory | 4GB DDR3 |
| Storage | 128GB 3.5" SATA |
| Form Factor | Small Form Factor |
| Maximum Memory | 16GB |
| Total Memory Slots | 2 |
| Expansion Slots | 2 PCI Slot 1 PCI Express X16 Slot 1 PCI Express X1 Slot |
| Optical Drive | DVD |
| Network Connection(s) | Ethernet 10/100/1000 |
| Front USB Port(s) | 4 (2.0) |
| Rear USB Port(s) | 4 (2.0) |
| VGA Port(s) | 1 |
| DVI Port(s) | 1 |
| HDMI Port(s) | 0 |
| DisplayPort(s) | 0 |
| Mini DisplayPort(s) | 0 |
| Serial Port(s) | 1 |
| Parallel Port(s) | 0 |
| Firewire Port(s) | 0 |
| eSATA Port(s) | 0 |
| PS/2 Port(s) | 2 |
| SD Card Reader | No |
Wrong item? Changed your mind? Don't need it anymore? We've got you covered.
30-Day Returns
Fast Shipping
1-Year Warranty
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*Shipping and delivery on business days. Purchaser is responsible for return shipping costs and insurance. Free/fixed shipping offers exclude palletized items — call for freight rates.



