Please allow ~4-6 weeks to dispatch from Australia for quality control. Only 4 devices per customer may be shipped each day, so orders placed for more than 4 devices will be shipped over multiple days.
Products containing Lithium-Ion batteries (laptops and smartphones) are subject to extra safety requirements and are experiencing further delays.
If you are ordering a device that does not include a Windows 11 licence as standard, please check Microsoft's minimum system requirements to confirm if it can be upgraded later should you wish to do so.
Product images are for illustrative purposes only and may contain AI-generated content. They do not represent the exact product that is subject to the cosmetic grading policy detailed here.




HP ProDesk 600 G4 SFF — Professional Small Form Factor Desktop
The HP ProDesk 600 G4 Small Form Factor desktop delivers enterprise-grade computing power in a compact design perfect for office environments. Powered by the Intel Core i5-8500 6-core processor at 3.0GHz with turbo speeds up to 4.1GHz, this refurbished system features 8GB DDR4 memory and a 256GB NVMe SSD for responsive performance. Originally designed for corporate use, this professionally refurbished desktop by Reboot IT comes with Windows 11 Pro and a comprehensive 12-month warranty, making it an ideal choice for small businesses, students, and home office setups requiring reliable, space-efficient computing power.
What Makes the ProDesk 600 G4 a Strong Small Form Factor Choice?
- 8th Generation Intel Power: The i5-8500 6-core processor delivers exceptional multitasking performance for demanding business applications, CAD software, and productivity suites with base clocks at 3.0GHz and turbo frequencies reaching 4.1GHz.
- Lightning-Fast Storage: The 256GB NVMe SSD provides boot times under 15 seconds, instant application launches, and rapid file transfers, dramatically improving workflow efficiency compared to traditional hard drives.
- Expandable Memory Architecture: Starting with 8GB DDR4 RAM with support for upgrades up to 64GB across four memory slots, ensuring future-proof performance as software demands increase.
- Space-Saving Professional Design: The Small Form Factor chassis occupies minimal desk space while providing full desktop connectivity, making it perfect for modern workspace environments and hot-desking scenarios.
- Enterprise-Grade Build Quality: Originally designed for 24/7 corporate environments, the ProDesk 600 G4 features robust construction, advanced thermal management, and comprehensive security features including TPM 2.0 chip.
- Windows 11 Pro Ready: Pre-installed with Windows 11 Pro providing enhanced security features, domain joining capabilities, and professional-grade productivity tools for business users.
How Does the ProDesk 600 G4 Perform in Daily Business Use?
The Intel Core i5-8500's six-core architecture excels at multitasking scenarios common in professional environments. Whether running multiple Chrome tabs alongside MYOB accounting software, Xero cloud applications, or Microsoft Office 365 suite, the processor maintains responsive performance. Video conferencing through Teams or Zoom while simultaneously editing documents and managing emails operates smoothly, with the 8GB DDR4 memory providing adequate headroom for typical business workflows. The processor's 9MB Smart Cache and 14nm manufacturing process ensure efficient power consumption while delivering consistent performance throughout extended work sessions.
Storage performance significantly impacts daily productivity, and the 256GB NVMe SSD transforms the computing experience. Windows 11 Pro boots in approximately 12-15 seconds, applications like Adobe Reader, QuickBooks, and web browsers launch instantly, and large file operations complete rapidly. The SSD's sequential read speeds of up to 3,500MB/s eliminate the traditional storage bottleneck, making file searches, database queries, and backup operations noticeably faster. This speed advantage compounds throughout the workday, reducing waiting times and improving overall efficiency compared to traditional mechanical hard drives.
The Small Form Factor design maximises workspace efficiency without compromising connectivity options. The compact 95mm x 270mm x 303mm footprint fits easily under monitors or in tight spaces, while front-panel USB 3.1 ports provide convenient access for flash drives and external devices. Dual DisplayPort and VGA outputs support multi-monitor setups essential for productivity, while Gigabit Ethernet ensures reliable network connectivity for cloud-based applications and file sharing. The tool-free chassis design simplifies upgrades and maintenance, making this desktop adaptable to changing business requirements.
Complete Technical Specifications
| Processor | Intel Core i5-8500 (8th Gen, 6 cores, 3.0GHz base, 4.1GHz turbo, 9MB cache) |
| Memory | 8GB DDR4-2666 SDRAM (expandable to 64GB, 4 DIMM slots) |
| Storage | 256GB NVMe SSD (M.2 2280, PCIe Gen3, additional HDD bay available) |
| Graphics | Intel UHD Graphics 630 (integrated, supports 4K displays) |
| Form Factor | Small Form Factor (SFF) - 95mm x 270mm x 303mm |
| Front I/O | 2x USB 3.1 Gen 1, 1x USB 3.1 Gen 2 Type-C, audio combo jack |
| Rear I/O | 4x USB 3.1 Gen 1, 2x USB 2.0, 2x DisplayPort 1.2, 1x VGA, RJ-45 Ethernet, audio line-in/out |
| Network | Intel Gigabit Ethernet (10/100/1000), 802.11ac Wi-Fi optional |
| Expansion | 1x PCIe x16 (x4 link), 1x PCIe x1, 1x M.2 2280 (occupied), additional HDD bay |
| Power Supply | 180W 89% efficient external adapter with active PFC |
| Security | TPM 2.0, HP Client Security Suite, BIOS protection, Kensington lock slot |
| Operating System | Windows 11 Pro 64-bit (activated and ready to use) |
| Dimensions | 95mm (W) x 270mm (H) x 303mm (D), weighs 3.9kg |
| Certifications | ENERGY STAR qualified, EPEAT Gold rated, RoHS compliant |
Is the ProDesk 600 G4 Right for Your Needs?
✓ Perfect For
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✗ Consider Alternatives If
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Understanding Condition Grades and Quality Standards
Reboot IT's transparent grading system ensures you know exactly what to expect from your refurbished ProDesk 600 G4. Each grade represents different levels of cosmetic wear while maintaining identical functionality and performance standards.
| A — Excellent | Minimal cosmetic wear with no visible scratches on the main surfaces. May show light keyboard impressions on screen or minor wear on corners. Functions perfectly with all original features intact. |
| B — Good | Moderate cosmetic wear including visible scratches up to 2cm, scuff marks, or slight discolouration. All ports, buttons, and functions work perfectly. Represents excellent value for cost-conscious buyers. |
Regardless of cosmetic grade, every ProDesk 600 G4 undergoes identical functionality testing, receives the same 12-month warranty coverage, and delivers the same computing performance. The grade purely reflects appearance, not capability or reliability.
Frequently Asked Questions About the ProDesk 600 G4
Q: What warranty coverage does the ProDesk 600 G4 include?
Every ProDesk 600 G4 comes with Reboot IT's comprehensive 12-month warranty covering all hardware components, functionality issues, and manufacturing defects. This includes free repair or replacement if any hardware problems develop during normal use.
Q: How do the condition grades A-Excellent and B-Good differ?
The grades reflect cosmetic appearance only. A-Excellent shows minimal wear with perhaps light keyboard marks, while B-Good may have visible scratches or scuffs but identical functionality. Both perform exactly the same and receive identical warranty protection. See our Cosmetic Grading Guide for detailed comparisons.
Q: What refurbishment process does each ProDesk 600 G4 undergo?
Each desktop undergoes the Verified Reboot Refurb process including comprehensive hardware diagnostics, component testing, cleaning, Windows 11 Pro installation, and final quality verification. This ensures reliable performance equivalent to new equipment at a fraction of the cost.
Q: What display connections and monitor support does this model provide?
The ProDesk 600 G4 includes dual DisplayPort 1.2 outputs plus VGA, supporting up to three monitors simultaneously. It can drive 4K displays at 60Hz through DisplayPort and supports various resolutions for multi-monitor productivity setups common in business environments.
Q: What upgrade options are available for memory and storage expansion?
The system supports RAM upgrades up to 64GB across four DDR4 slots and includes space for an additional 3.5-inch hard drive alongside the existing NVMe SSD. The PCIe slots accommodate expansion cards for enhanced connectivity or specialised functions.
Q: Is this desktop compatible with Windows 11 and future operating system updates?
Yes, the ProDesk 600 G4 meets all Windows 11 hardware requirements including TPM 2.0, UEFI firmware, and Secure Boot capability. It comes pre-installed with Windows 11 Pro and will receive ongoing Microsoft security and feature updates throughout the warranty period.
Comprehensive 12-Month Warranty Protection
Your ProDesk 600 G4 includes full hardware warranty coverage for 12 months from purchase date, protecting against component failures, functionality issues, and manufacturing defects under normal business use.
Coverage includes all internal components, ports, connectivity features, and pre-installed software. Our warranty provides repair or replacement service with minimal downtime to keep your business operations running smoothly.
Backed by Reboot IT's 20+ years of refurbishment expertise and trusted by over 100,000 customers across Australia, your investment is protected by proven industry experience and commitment to customer satisfaction.
Upgradeability and Compatibility Options
The ProDesk 600 G4's expandable design accommodates future growth requirements without requiring complete system replacement. Memory expansion supports up to 64GB DDR4 across four accessible DIMM slots, enabling smooth performance increases as software demands evolve. The current 8GB configuration provides excellent baseline performance, with upgrade paths to 16GB, 32GB, or maximum 64GB depending on workload requirements.
Storage expansion includes space for an additional 3.5-inch SATA hard drive alongside the primary NVMe SSD, ideal for bulk storage, backup drives, or data archival. The existing M.2 slot can also support larger NVMe drives if higher-capacity primary storage becomes necessary. PCIe expansion slots accommodate dedicated graphics cards, additional network interfaces, or specialised business cards for specific industry applications.
Peripheral compatibility covers modern USB 3.1 devices, legacy USB 2.0 equipment, and professional display configurations. The extensive port selection including USB-C, multiple DisplayPorts, and VGA ensures compatibility with existing office equipment while supporting future technology adoption. Tool-free chassis access simplifies upgrades and maintenance, reducing downtime and technical service costs.
None |
| Audio Output | Integrated |
| Brand | HP |
| Bundle Description | None |
| Chipset | None |
| Colour | Black |
| Connectivity | HDMI|USB 3.0|USB 2.0|DisplayPort|Ethernet|Audio In/Out |
| Custom Bundle | No |
| Features | None |
| Form Factor | Small Form Factor |
| GPU | Intel UHD 630 Graphics |
| Graphics Processing Type | Integrated/On-Board Graphics |
| Hard Drive Capacity | 256GB |
| Item Height | 345mm |
| Item Length | 346mm |
| Item Weight | 6.2kgs |
| Item Width | 105mm |
| Manufacturer Warranty | 1 Year |
| Maximum RAM Capacity | 64 GB |
| Memory Type | DDR4 DIMM |
| Model | HP ProDesk 600 G4 SFF |
| Most Suitable For | Office|Casual Computing|Graphic Design |
| Motherboard Model | None |
| Processor Model | 8500 |
| Operating System | Windows 11 Pro |
| Operating System Edition | Pro |
| Optical Drive | DVD/RW |
| Other Software | None |
| Processor | Intel Core i5 8th Gen. |
| Processor Speed | 3.00GHz |
| RAM Size | 8GB |
| Release Year | 2018 |
| Resolution | None |
| Screen Size | None |
| Series | HP ProDesk |
| SSD Capacity | 256GB |
| Storage Type | NVMe SSD |
| Type | Desktop |
| Cores | 6 |
| Release Date | Q1'18 |
| L2 Cache | None |
| Max Turbo Speed | None |
| Part Number | 4VG26PA#ABG |
| MPN | NONE |
| RAM Type | DDR4 DIMM |
| Webcam | NO |
Refurbished Computers - Cosmetic Grading Guide
Our supplier's refurbished hardware is typically graded either "Excellent" or "Good", however, some legacy products were graded under a letter grading system (A, B, C). Please find the definitions for each grade below and contact us if you're uncertain of a device's grade.
Used Smartphone / Refurbished Mobile Phones
"Excellent" Grade
Devices in this category appear like new, with very minor wear. Expect light or fine scratches on the screen that are shallow enough not to catch on a fingernail. The edge around the glass is virtually flawless, save for possible light scratching around the power port. The back plate may show light/fine scratches, including on the Apple logo, with any discoloration being minimal.
"Good" Grade
These devices are characterized by being fully tested and functional even if they have body scratches, minor paint chips, or a small hairline crack on the screen. Screens are free from dead pixels but may exhibit slight scratching from moderate use.
Refurbished Desktops, Laptops and Monitors
"Excellent" Grade - Laptops
Reserved for units that show barely any signs of previous use, these laptops may exhibit very minor scuffing or abrasions, associated only with minimal standard use. The keyboards show light wear, and importantly, the screens are pristine, free from any scratches, cracks, chips, dead pixels, dark spots, discoloration, or blemishes.
"Excellent" Grade - Desktops
Desktop PCs in the "Excellent" grade category are free from deep scratches, cracks, paint chips, or any broken/missing pieces, ensuring a sleek and almost-new aesthetic.
"Excellent" Grade - Monitors
"Excellent" grade is reserved for units that show evidence of very little to no previous use. Any wear on an "Excellent" Display, including housing/frame and/or external surfaces (i.e. Frame) is associated with standard minimal use. "Excellent" units may have minor scuffing and / or minor abrasions on plastics with from standard light previous use."Excellent" Displays will feature no scratches, cracks, chips, dead pixels, dark spots, discoloration or blemishes. Units will only feature the standard minimal wear and tear that is associated with a used unit.
"Good" Grade - Laptops
"Good" laptops may feature one or several small dings or dents on covers and / or small paint chips on the surface or small hairline cracks in the bezel. Laptop screens may feature uneven light diffusion in screen and may feature subtle blemishes. "Good" Laptops will not feature cracks screens but may feature slight scratching, dead pixels or white spots on the screen.
"Good" Grade - Desktops
"Good" grade desktops may have light scratches on external body and may feature more excessive unit housing and/or external case wear than "Excellent" units, including wear on case / lid. "Good" PCs may feature one or several small dings or dents on covers and / or small paint chips on the surface.
"Good" Grade - Monitors
Displays in the "Good" grade have been fully tested and are functional but may include scratches on body, small paint chips, minor cracks on body, loose and/or wobbly bases. "Good" Display screens may feature uneven light diffusion in screen and may feature subtle to moderate blemishes. "Good" Displays will not feature cracks on screens but may feature slight scratching on screen surfaces from moderate use or wear, dead pixels or white spots on the screen.
Legacy letter grading
Used Smartphone / Refurbished Mobile Phones
A Grade
- No chips, scratches or cracks on the front glass and housing
- No missing or alternative parts
- No sign of liquid damage
- Battery cannot be swollen
B Grade – Same as A Grade except:
- May have light scuffs but no chips or cracks
- Light scratches on housing or front glass
C-Grade – Same as B Grade except:
- Unlimited long shallow scratches on the front glass
- No chips or cracks on the front glass
- Unlimited scratches, chips/dents on back cover housing and corners
- Minor cracks allowed
- Customized housing and aftermarket covers allowed
Refurbished Desktops, Laptops and Monitors
A-Grade
- Overall excellent to very good cosmetic condition. Some may be pristine, others may have light scratches or minor blemishes
- Laptops may have some shiny areas around the keyboard such as the space bar, touchpad or touchpad buttons
- Keyboard keys will be in excellent condition
- Laptop and monitor screens will be blemish free
- Cosmetic blemishes will not impact the overall functionality or performance of the device
B-Grade
- Will have some cosmetic blemishes that include scratches and/or other imperfections
- Minor scratches and dents on the housing
- Laptops may have shiny keys or shiny surfaces around the keyboard however all characters will be legible
- Laptop and monitors screens will have imperfections such as minor scratches, minor chips and/or white spots. There will be no cracking on the screen
- Have the same warranty as A Grade
- Pricing will be cheaper than A Grade
C-Grade
- Same as B-Grade except may have unlimited scratches/blemishes on the screen
- May have cracks/chips or dents on the housing
- Have the same warranty as A Grade
- Pricing will be cheaper than B Grade





