AustraIia’s trusted refurbished computers since 2001 – Extra 10% off Red Tag deals

Affordable Tech! Laptops under $200

Shop our range of cheap laptops

1 4

Selling fast!
Grab yours while you can

HP Pro Mini 400 G9 PCHP ProDesk 400 G9 Mini i5 12500T 2GHz 16GB 512GB WIFI W11P

Excellent Grade · Fully tested · No visible marks
SKU: R-4299-EXC
4.76
★★★★★
708 reviews
12mo
Warranty
30day
Free returns
40+
Tech-tested checks
✓ Free AU shipping ✓ Pickup: Springvale VIC
Select Option
$625.00 $729.00

You save $104

or 4 interest-free payments of $156.25 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!

At a Glance

Processor
Intel Core i5 12th Gen.
Memory
16GB
Storage
512GB NVME SSD
Operating System
Windows 11 Pro
Graphics
Intel UHD Graphics 4690

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

Using the exact text, format using bold where appropriate to enhance readilbity.## Certified Refurbished HP ProDesk 400 G9 USDT Mini Desktop

The HP ProDesk 400 G9 USDT delivers exceptional performance with an Intel Core i5-12500T processor (2.0GHz base, up to 4.4GHz turbo), 16GB DDR4-3200 RAM, 512GB M.2 PCIe NVMe SSD storage, integrated Wi-Fi 6E connectivity, and Windows 11 Pro in an ultra-compact 17.7 x 17.5 x 3.4cm form factor weighing just 1.42kg.

This certified refurbished mini desktop is perfect for modern workplaces where space efficiency meets professional performance requirements. The ultra-small desktop design makes it ideal for reception areas, hot-desking environments, digital signage applications, and space-conscious office setups.

Key Features & Benefits

  • Space-Saving Design: Ultra-compact form factor that can be mounted behind monitors or tucked away discreetly
  • Professional Performance: 12th generation Intel processor with 6 P-cores and 12 threads handles demanding business applications
  • Multi-Display Support: Connect up to 4 displays via dual DisplayPort 1.4a and HDMI 2.1 outputs
  • Modern Connectivity: Wi-Fi 6E, Bluetooth 5.3, Gigabit Ethernet, and versatile USB-C port with power delivery
  • Enterprise Security: TPM 2.0 chip, Intel vPro technology, and comprehensive BIOS security features
  • Energy Efficient: ENERGY STAR certified with 90W external power adapter

Essential Technical Specifications

  • Processor: Intel Core i5-12500T (6 P-cores, 12 threads, up to 4.4GHz turbo)
  • Memory: 16GB DDR4-3200 SDRAM (expandable to 64GB)
  • Storage: 512GB M.2 2280 PCIe NVMe SSD
  • Graphics: Intel UHD Graphics 770 with shared memory
  • Dimensions: 17.7 x 17.5 x 3.4cm
  • Weight: 1.42kg
  • Connectivity: Wi-Fi 6E AX211, Bluetooth 5.3, Gigabit Ethernet
  • Ports: USB-C, 4x USB-A, dual DisplayPort 1.4a, HDMI 2.1
  • Operating System: Windows 11 Pro (downgrade rights to Windows 10 Pro)
  • Power Supply: 90W external adapter (up to 89% efficiency)

Windows 11 Pro Operating System

Advantages: Enhanced security features, improved productivity tools, streamlined interface, and comprehensive business management capabilities including BitLocker encryption and domain join functionality.

Considerations: Requires familiarisation with updated interface elements and some legacy applications may need compatibility verification.

Quality Assurance & Testing

At Reboot IT, we've been industry experts since 2001, utilising cutting-edge testing software to ensure every device meets our rigorous standards. All units undergo our thorough testing process where we verify every feature and function works perfectly. This comprehensive refurbishment process ensures you receive a reliable, professionally restored device.

Our certified refurbished HP ProDesk 400 G9 USDT comes with verification of all hardware components, complete functionality testing, and professional data sanitisation. Each device is verified refurb by Reboot IT's thorough testing process, providing you with confidence in your purchase.

Warranty & Support

This certified refurbished HP ProDesk 400 G9 USDT is sold by Reboot IT with a comprehensive 1 year warranty, providing you with peace of mind and professional support for your investment.

Ready to transform your workspace with this powerful, space-saving solution? Add this certified refurbished HP ProDesk 400 G9 USDT to your cart today and experience professional computing in a remarkably compact design.

Certified Refurbished HP ProDesk 400 G9 USDT Mini Desktop

The HP ProDesk 400 G9 USDT delivers exceptional performance with an Intel Core i5-12500T processor (2.0GHz base, up to 4.4GHz turbo), 16GB DDR4-3200 RAM, 512GB M.2 PCIe NVMe SSD storage, integrated Wi‑Fi 6E connectivity, and Windows 11 Pro in an ultra-compact 17.7 x 17.5 x 3.4 cm form factor weighing just 1.42 kg.

This certified refurbished mini desktop is perfect for modern workplaces where space efficiency meets professional performance requirements. The ultra-small desktop design makes it ideal for reception areas, hot-desking environments, digital signage applications, and space-conscious office setups.

Key Features & Benefits

  • Space-Saving Design: Ultra-compact form factor that can be mounted behind monitors or tucked away discreetly
  • Professional Performance: 12th generation Intel processor with 6 P-cores and 12 threads handles demanding business applications
  • Multi-Display Support: Connect up to 4 displays via dual DisplayPort 1.4a and HDMI 2.1 outputs
  • Modern Connectivity: Wi‑Fi 6E, Bluetooth 5.3, Gigabit Ethernet, and versatile USB‑C port with power delivery
  • Enterprise Security: TPM 2.0 chip, Intel vPro technology, and comprehensive BIOS security features
  • Energy Efficient: ENERGY STAR certified with 90W external power adapter

Essential Technical Specifications

  • Processor: Intel Core i5-12500T (6 P-cores, 12 threads, up to 4.4GHz turbo)
  • Memory: 16GB DDR4-3200 SDRAM (expandable to 64GB)
  • Storage: 512GB M.2 2280 PCIe NVMe SSD
  • Graphics: Intel UHD Graphics 770 with shared memory
  • Dimensions: 17.7 x 17.5 x 3.4 cm
  • Weight: 1.42 kg
  • Connectivity: Wi‑Fi 6E AX211, Bluetooth 5.3, Gigabit Ethernet
  • Ports: USB‑C, 4x USB‑A, dual DisplayPort 1.4a, HDMI 2.1
  • Operating System: Windows 11 Pro (downgrade rights to Windows 10 Pro)
  • Power Supply: 90W external adapter (up to 89% efficiency)

Windows 11 Pro Operating System

  • Advantages: Enhanced security features, improved productivity tools, streamlined interface, and comprehensive business management capabilities including BitLocker encryption and domain join functionality.
  • Considerations: Requires familiarisation with updated interface elements and some legacy applications may need compatibility verification.

Quality Assurance & Testing

At Reboot IT, we've been industry experts since 2001, utilising cutting-edge testing software to ensure every device meets our rigorous standards. All units undergo our thorough testing process where we verify every feature and function works perfectly. This comprehensive refurbishment process ensures you receive a reliable, professionally restored device.

Our certified refurbished HP ProDesk 400 G9 USDT comes with verification of all hardware components, complete functionality testing, and professional data sanitisation. Each device is verified refurb by Reboot IT's thorough testing process, providing you with confidence in your purchase.

Warranty & Support

This certified refurbished HP ProDesk 400 G9 USDT is sold by Reboot IT with a comprehensive 1 year warranty, providing you with peace of mind and professional support for your investment.

Ready to transform your workspace with this powerful, space-saving solution? Add this certified refurbished HP ProDesk 400 G9 USDT to your cart today and experience professional computing in a remarkably compact design.

Specifications
  • Model
    Pro Mini 400 G9 PC
  • Processor
    Intel Core i5 12th Gen.
  • RAM
    16GB
  • Storage
    512GB
  • Storage Type
    NVME SSD
  • Graphics
    Intel UHD Graphics 4690
  • Operating System
    Windows 11 Pro
  • Colour
    Black
  • Warranty
    1 Year

What's in the box
  • 1 x HP ProDesk 400 G9
  • Power cord
  • Tax invoice
By buying refurbished, you avoid
300kg

of CO₂ vs. manufacturing new

And divert
1.8kg

of e-waste from landfill

Source: Circular Computing LCA + OEM PCF datasheets — per unit.

Why the Pro Mini 400 G9 PC?

The HP ProDesk 400 G9 Mini offers powerful performance with its Intel i5-12500T processor, 16GB RAM, and 512GB NVMe SSD, making it ideal for multitasking and demanding applications. Its compact design and Windows 11 Pro enhance your workspace efficiency, while a one-year warranty provides added peace of mind.

The HP ProDesk 400 G9 Mini is a compact black desktop featuring an Intel Core i5-12500T processor, 16GB RAM, 512GB storage, WiFi, and Windows 11 Pro. Its rectangular design includes front USB ports, headphone jack, and power button.

Compact Design

Ultra small form factor saves space without sacrificing performance.

Ample Memory and Storage

16GB RAM and 512GB NVMe SSD provide speedy access to your data.

Powerful Performance

Intel 12th Gen i5 processor ensures fast and efficient multitasking capabilities.

Windows 11 Pro

Experience the latest features and security enhancements for better productivity.

Compact Design

Ultra small form factor saves space without sacrificing performance.

Ample Memory and Storage

16GB RAM and 512GB NVMe SSD provide speedy access to your data.

The HP ProDesk 400 G9 Mini is a compact black desktop featuring an Intel Core i5-12500T processor, 16GB RAM, 512GB storage, WiFi, and Windows 11 Pro. Its rectangular design includes front USB ports, headphone jack, and power button.

Powerful Performance

Intel 12th Gen i5 processor ensures fast and efficient multitasking capabilities.

Windows 11 Pro

Experience the latest features and security enhancements for better productivity.

Let customers speak for us

from 708 reviews
HP ZBook 17 G6 E-2186M 2.9GHz 64GB 1TB SSD P5200 17.3" UHD W11P | 1yr Wty
Steven

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

HP ZBook 17 G6 E-2186M 2.9GHz 64GB 1TB SSD P5200 17.3" UHD W11P | 1yr Wty
Microsoft Surface Pro 5 1796 i5 7300U 2.6GHz 4GB 128GB 12" Touch W10P | Wty
Tuaine

I like and very nice clean

Microsoft Surface Pro 5 1796 i5 7300U 2.6GHz 4GB 128GB 12" Touch W10P | Wty
Memory Upgrade
Wayne

Very easy fit

Memory Upgrade
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

Still undecided? Ask our experts.

Similar Products

Hot Desktop Computers

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.

> Learn more

Find a refurbished school laptop for BYOD.

LOOKING FOR A SCHOOL DEVICE?

Contact Us ?

ARE YOU A CORPORATE?

Contact Us >

NEED HELP?

Tech selection can be hard but we have your back.

Contact suport today from 10-6pm weekdays >
  • IBM Business partner

  • We are an IBM authorized reseller for refurbished computer and IT hardware, tested by professional and guaranteed to perform like new.
Back to top