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HP PRODESK 400 G5 DESKTOP MINIHP ProDesk 400 G5 Mini PC i3-9100T 16GB 128GB NVMe SSD Win 11 Pro Open Box Wty

Excellent Grade · Fully tested · No visible marks
SKU: R-6095-EXC
4.76
★★★★★
708 reviews
12mo
Warranty
30day
Free returns
40+
Tech-tested checks
✓ Free AU shipping ✓ Pickup: Springvale VIC
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$289.00 $369.00

You save $80

or 4 interest-free payments of $72.25 with

Customize and Upgrade Your Device

Perks you get with every purchase

Warranty
If your item experiences a technical issue, we've got you covered—we'll either repair it or replace it for you!

30 days to change your mind
Feel free to return your item for any reason within the first 30 days of receiving it. It's that easy!

Free express shipping
Enjoy fast, free express shipping on all small items like laptops, tablets, and smartphones!

Customer support
Rest assured, we’ll always respond to you within 1 business day!

Frequently asked questions

What does the warranty cover?

Our warranty covers all hardware faults, but please note it doesn’t cover accidental damage or software issues. However, we’re here to help with technical support for those matters!

What is a refurbished device?

A refurbished device is a pre-owned item that has been restored to meet high-quality standards. At Reboot IT, we adhere to strict quality guidelines, ensuring that our refurbished products are not the same as used or secondhand items. We meticulously clean, test, and assess each device, replacing worn parts with high-quality components.

Unlike used items, which lack guarantees and rely solely on the seller's word regarding condition, refurbished devices come with assurance of quality and reliability.

What payment options are available?

We offer a variety of payment options to make your shopping experience as convenient as possible! You can pay using all major credit cards, Apple Pay, Google Pay, Shop Pay, Afterpay, Zip Pay, and PayPal. If you prefer, we also accept bank deposits and even cash for in-store purchases!

Safe & Secure

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

We ensure secure processing of your payment information and do not retain or have access to your credit card details.

Description

HP ProDesk 400 G5 Mini — Brand-New, Open-Box Windows 11 Pro Desktop

A genuinely brand-new, open-box HP ProDesk 400 G5 Desktop Mini, backed by a Reboot IT 12-month warranty. This is factory-fresh hardware in opened retail packaging — not a used or refurbished machine. It pairs a quad-core Intel Core i3-9100T processor with 16GB of DDR4 memory and a fast 128GB NVMe SSD running Windows 11 Pro, ready for office, study and home productivity straight out of the box.

Key Benefits

  • Brand-new, open box: factory-new hardware at a smarter price — never put into service, simply supplied in opened packaging.
  • Genuinely compact: the ultra-small ~1-litre chassis tucks behind a monitor or onto a shelf, freeing up your desk.
  • Fast everyday response: a 128GB NVMe SSD delivers quick boot times and snappy app loading versus an old hard drive.
  • Comfortable multitasking: 16GB of DDR4 RAM keeps browser tabs, email and Office documents running smoothly side by side.
  • Dual-monitor ready: DisplayPort outputs and integrated Intel UHD 630 graphics drive two screens for a productive workspace.
  • Windows 11 Pro included: modern security, BitLocker and remote-desktop features come pre-installed and genuine.

Performance In Use

For day-to-day business and home computing, this ProDesk 400 G5 Mini hits the sweet spot. The quad-core i3-9100T handles web browsing, email, video calls and Microsoft Office without fuss, while the NVMe SSD means Windows 11 Pro is ready to work within seconds of pressing the power button. It is a natural fit for reception desks, back-office workstations, point-of-sale terminals and student study setups.

The 16GB of DDR4 memory gives you real headroom. You can keep a dozen browser tabs open alongside a spreadsheet, a video conference and your email client without the system slowing to a crawl. With integrated Intel UHD 630 graphics and DisplayPort output, adding a second monitor is straightforward — a simple upgrade that makes multitasking far more comfortable.

Because it draws so little power and runs quietly, the ProDesk 400 G5 Mini is well suited to always-on roles such as digital signage, thin-client access or a tidy home-office PC. It is not built for heavy gaming, 4K video editing or 3D rendering — but for the everyday tasks most people and businesses actually do, it delivers dependable performance in a footprint you will barely notice.

Technical Specifications

Brand HP
Model ProDesk 400 G5 Desktop Mini
Condition Brand new, open box
Processor Intel Core i3-9100T (9th Gen, 4 cores / 4 threads, up to 3.7GHz)
Memory 16GB DDR4
Storage 128GB NVMe SSD
Graphics Intel UHD Graphics 630 (integrated)
Operating System Windows 11 Pro
Form Factor Ultra-small Desktop Mini (~1L)
Connectivity DisplayPort, USB 3.1 Type-A & Type-C, Gigabit Ethernet, audio; Wi-Fi & Bluetooth where fitted
Warranty 12-month Reboot IT warranty

Is It Right For You?

Best For ✓ Not For ✗
Office, admin & back-office work Modern AAA gaming
Students & home study 4K video editing & 3D rendering
Web, email, Office & video calls Heavy virtual-machine workloads
Space-saving & dual-monitor desks GPU-accelerated creative apps
Point-of-sale & signage / thin-client Users needing large local storage out of the box

Open-Box Condition Grades

Every unit is brand-new stock supplied in opened packaging. Grades describe cosmetic condition only — all units are factory-new and have never been put into service.

Grade What to expect
A — Excellent As-new condition. Factory-new unit with packaging opened only; no meaningful signs of handling.
B — Good Open box with light handling or storage marks on the casing. Cosmetic only — factory-new internally and fully tested.

All units are tested and checked by Reboot IT before dispatch. As this is a desktop mini PC there is no battery to assess; the power adapter and cabling are included.

Frequently Asked Questions

Is this new or used?

This is brand-new, open-box stock — a factory-new unit supplied in opened packaging, not a used or refurbished machine. Every unit is tested by Reboot IT before dispatch.

Does it come with Windows installed?

Yes — genuine Windows 11 Pro is pre-installed and activated, ready to set up with your own account.

Can I add more storage or memory later?

Yes. The ProDesk 400 G5 Mini supports additional/upgraded DDR4 memory and storage, so it is easy to expand as your needs grow.

Will it run two monitors?

Yes. Using the DisplayPort output and integrated Intel UHD 630 graphics, you can run a dual-monitor setup for a more productive workspace.

Is it good enough for gaming?

It handles light and older titles on integrated graphics, but it is not designed for modern AAA gaming. It shines at office, study and everyday tasks.

What is included in the box?

The mini PC and its power adapter/cabling. Monitor, keyboard and mouse are not included unless otherwise stated.

How is it delivered and what warranty applies?

We offer free standard shipping Australia-wide, dispatched promptly from our Melbourne warehouse, and every unit includes a 12-month Reboot IT warranty.

Warranty & Why Reboot IT

This brand-new, open-box HP ProDesk 400 G5 Mini is covered by a 12-month Reboot IT warranty. Every machine is checked and tested before dispatch, so you get factory-new hardware with complete peace of mind.

Reboot IT has been Australia's trusted IT specialist since 2001, based in Melbourne. We back every order with genuine local support and free standard Australia-wide shipping, dispatched quickly from our warehouse — a smart way to buy brand-new business hardware for less.

Specifications
  • Model
    PRODESK 400 G5 DESKTOP MINI
  • Storage Type
    NVMe SSD
  • Graphics
    Intel UHD Graphics
  • Operating System
    Windows 11

What's in the box
  • HP - PRODESK 400 G5 DESKTOP MINI
  • Tax invoice
  • Power cable
By buying refurbished, you avoid
375kg

of CO₂ vs. manufacturing new

And divert
7.5kg

of e-waste from landfill

Source: HP EliteDesk PCF datasheet — per unit.

Why the PRODESK 400 G5 DESKTOP MINI?

A brand-new, open-box mini desktop that punches above its size — fast NVMe storage, 16GB of memory and genuine Windows 11 Pro in an ultra-compact chassis, all backed by a 12-month Reboot IT warranty.

Front view of a refurbished HP ProDesk 400 G5 Mini (Intel Core i5-9500T, 8GB RAM, 256GB SSD, WiFi) by HP showing USB ports, audio jacks, power button, and ventilation grille on a white background.

Brand New, Open Box

Factory-fresh hardware supplied in opened packaging — never used, just a smarter price.

Space-Saving Design

Ultra-small 1-litre chassis tucks behind a monitor and frees up your desk.

Fast NVMe SSD

128GB NVMe storage boots Windows 11 Pro and loads everyday apps in seconds.

12-Month Warranty

Tested by Reboot IT and covered for 12 months, with free Australia-wide shipping.

Brand New, Open Box

Factory-fresh hardware supplied in opened packaging — never used, just a smarter price.

Space-Saving Design

Ultra-small 1-litre chassis tucks behind a monitor and frees up your desk.

Front view of a refurbished HP ProDesk 400 G5 Mini (Intel Core i5-9500T, 8GB RAM, 256GB SSD, WiFi) by HP showing USB ports, audio jacks, power button, and ventilation grille on a white background.

Fast NVMe SSD

128GB NVMe storage boots Windows 11 Pro and loads everyday apps in seconds.

12-Month Warranty

Tested by Reboot IT and covered for 12 months, with free Australia-wide shipping.

Let customers speak for us

from 708 reviews
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Product is exactly as described, would have no problem buying again

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I like and very nice clean

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Wayne

Very easy fit

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Apple iPhone XR A2105 128GB White Unlocked Smartphone | Wty
David

Great upgrade phone at a very reasonable price.
Condition as stated in description if not better.

Apple iPhone XR A2105 128GB White Unlocked Smartphone | Wty
Dell Latitude 5520 i5 1135G7 2.4GHz 8GB 256GB SSD 15.6" Touch W11P | Wty
Jason

Great little laptop for school

Dell Latitude 5520 i5 1135G7 2.4GHz 8GB 256GB SSD 15.6" Touch W11P | Wty
Dell Latitude 7210 2-in-1 i5 10210U 1.6GHz 8GB 256GB LTE 12.3" Touch W11P | Wty
Shane

Good value and great quality

Dell Latitude 7210 2-in-1 i5 10210U 1.6GHz 8GB 256GB LTE 12.3" Touch W11P | Wty
HP ProDesk 400 G3 SFF i3 6320 3.9GHz 8GB 500GB NO OS Computer | 1yr Wty
T.B.

Fantastic service

HP ProDesk 400 G3 SFF i3 6320 3.9GHz 8GB 500GB NO OS Computer | 1yr Wty
James Lees
All-in-one Solution for Home Office

I was looking for an in-expensive all-in-one solution for my home office to replace my existing desktop and monitor. I found this EliteOne 800 on reboot IT for under $200. I wasn't sure what to expect. It arrived within two days!!!! I upgraded the RAM, replaced the HDD and installed Windows 11. This is unbeatable value and was the cheapest price online. Coupled with a 3-month warranty, Reboot IT are by far the best online refurbished retailer I have used. Awesome!

Reboot IT
Apple iPad 6th Gen 9.7" 32GB Space Grey Wi-Fi + Cellular A10 Unlocked | Wty
Farley

Great service. Product in great condition and exactly what i want. I wanted this for a specific purpose but i dont need to spend $900 on a new one.

Apple iPad 6th Gen 9.7" 32GB Space Grey Wi-Fi + Cellular A10 Unlocked | Wty
Melinda Panuan
Excellent

Excellent work

Reboot IT
steve maloney
exactly as described and works well

exactly as described and works well , just like the staff down there. 10/10

Reboot IT
Lenovo ThinkPad X1 Carbon G5 i7 6600U 2.6GHz 8GB 256GB 14" W10P | Wty
Anonymous
Very happy

Very happy, thank you

Lenovo ThinkPad X1 Carbon G5 i7 6600U 2.6GHz 8GB 256GB 14" W10P | Wty
Barbara Jenkins Jenkins
Just having trouble greeting it linked to the internet otherwise it’s okay

Just having trouble greeting it linked to the internet otherwise it’s okay.

Reboot IT
Dell XPS 13 7390 2-in-1 i7 1065G7 1.3GHz 16GB 512GB SSD 13.4" Touch W11P | Wty
Anonymous
Fair tech for price

Fair tech for price, good specs for era, serves the purpose. The black keyboard is an interesting rubber like texture clearly by design to pad the screen and avoid the keyboard touching. Screen is great. Still looking for magic formula to enable computer use in the bright bright sunshine. Keyboard taps are loud for someone who likes silent touch. The perfect PC has to exist, like build a bear.

Dell XPS 13 7390 2-in-1 i7 1065G7 1.3GHz 16GB 512GB SSD 13.4" Touch W11P | Wty
IAN BOLSTER
Works excellently as advertised.

The laptop was sold with a warning about worn keycaps. In fact they had been obviously vandalised (ex school laptops, perhaps?). The keyboard worked fine, and the rest of the laptop too. I'm using it as a file server, so I don't need the keyboard much. So very pleased, and also pleased with reboot-it's service - as always, excellent, and quick responses to any queries.

Reboot IT

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How Reboot IT Revitalises and Certifies Refurbished Equipment

Learn more

  • Device Arrival

    We carefully source certified refurbished computers from trusted corporate, government, and education sectors, giving each device a fresh start and new purpose.

  • Secure Data Wipe

    To protect your privacy, all previous data is securely and thoroughly erased from every tested refurbished device before it reaches you.

  • Comprehensive Testing

    Each certified refurbished computer undergoes detailed testing with specialized software to ensure full functionality, and any worn or faulty components are replaced exclusively with original parts, guaranteeing reliable, long-lasting performance for your tested refurbished device.

  • Cleaning & Grading

    Every computer is professionally cleaned and carefully graded, so you know exactly what condition your certified refurbished computer is in—giving you full confidence in your purchase.

WELCOME TO REBOOT IT

Australia's number one source for Refurbished Desktops, Laptops, Monitors and more.

Since 2001, Reboot IT has been Australia’s trusted source for certified refurbished computers and IT hardware. Every device is rigorously tested and professionally refurbished to deliver reliable, like-new performance — all at a fraction of the cost of new equipment. With over 100,000 satisfied customers, we combine expert quality with unbeatable value. Shop with confidence knowing your refurbished device comes backed by warranty and supports sustainable tech reuse.

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