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HP Pro 400 G9 Mini PC Desktop Computer, Intel CPU, 16GB DDR5 RAM, 256GB PCIe SSD, Triple 4K Display Support, USB-C, Ultra-Quiet Design, Bluetooth 5.2, WiFi 6, Keyboard and Mouse, Windows 11 Pro

  • Based on 28 reviews
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Availability: In Stock.
Fulfilled by ProTech PC
Arrives Apr 15 – Apr 19
Order within 9 hours and 7 minutes
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Size: 16GB RAM | 256GB SSD


Style: Intel CPU


Features

  • Compact, Durable, and Trusted HP Quality: Weighing under 3 pounds and measuring just 17.7 x 17.5 x 3.4 cm, this Mini PC combines a sleek, space-saving design with HPs legacy of reliability and innovation. Crafted with premium materials, its engineered to withstand daily use while ensuring enterprise-grade performance and dependable support for your business or personal needs.
  • Efficient Performance for Business & Everyday Use: Powered by the Intel Celeron G6900T (Dual-Core, 4MB Cache, 2.8 GHz), engineered for smooth multitasking and daily computing, with Intel UHD Graphics delivering crisp visuals for work or entertainment.
  • High-Speed RAM & Ample Storage: Configurable up to 32GB DDR5 RAM for effortless multitasking and blazing-fast response times, paired with up to 4TB PCIe M.2 SSD for ultra-fast boot-up and efficient data handling.
  • Comprehensive Connectivity by HP: Designed for modern needs with advanced ports: 1 headphone/microphone combo, 1 USB Type-C (20Gbps), 2 USB Type-A (10Gbps, 1 with charging). 2 DisplayPort 1.4, 1 HDMI 2.1, 1 Ethernet, 3 USB Type-A (10Gbps & 5Gbps), power connector.
  • HP-Powered Productivity with Windows 11 Pro: Enjoy the latest Windows 11 Pro, pre-configured for organised multitasking, intuitive navigation, and collaboration toolsall supported by HPs quality guarantee.

Description

Processor: Intel Celeron G Series 2.8 GHz. RAM: Up to 64 GB DDR5-5200 MHz Storage: Up to 4 TB PCIe SSD Wireless: Wi-Fi 6, Bluetooth Optical Drive: None Form Factor: Mini Desktop Keyboard: Traditional Keyboard, black Mouse: Traditional Mouse, black Front Ports: 1x USB-C 10Gbps, 2x USB-A 10Gbps, 1x Headset Combo Rear Ports: 1x HDMI 2.0, 2x DisplayPort 1.4, 4x USB-A 5Gbps, 2x USB-A 2.0, 1x RJ-45, 1x Audio-Out Weight:3 LB

Brand: HP


Operating System: Windows 11 Pro


CPU Model: Celeron


CPU Speed: 2.8 GHz


Cache Size: 4


Graphics Card Description: Integrated


Graphics Coprocessor: Shared


Memory Storage Capacity: 16 GB


Specific Uses For Product: Business


Personal computer design type: Mini PC


Operating System: Windows 11 Pro


Specific Uses For Product: Business


Personal Computer Design Type: Mini PC


Color: Black


Hard Disk Description: SSD


Hardware Interface: Ethernet


Power Consumption: 90 Watts


Item Dimensions: 19.5 x 5 x 9 inches


Security Features: Windows Defender, Windows Hello, Windows Security


Item Weight: 2.81 Kilograms


Specification Met: Partially Met


Video Output: HDMI, DisplayPort


Video Output Interface: HDMI


Hard Disk Interface: PCIE x 4


Style Name: Intel CPU


Cooling Method: Air


Compatible Devices: Keyboard, Mouse


Power Plug Type: Type A - 2 pin (North American)


Graphics Description: Integrated


Graphics Coprocessor: Shared


Graphics Card Ram: 16 GB


Graphics Ram Type: GDDR5


Graphics Card Interface: Integrated


Processor Series: Celeron


Processor Speed: 2.8 GHz


Processor Socket: LGA


Processor Count: 1


CPU Model Speed Maximum: 2.8 GHz


Total Usb Ports: 13


Total Number of HDMI Ports: 1


Number of Component Outputs: 3


Human-Interface Input: Keyboard


Keyboard Description: Traditional Wired Black Keyboard


Keyboard Layout: QWERTY


Brand: HP


Model Number: G9


Model Name: Pro 400


Built-In Media: Keyboard, Mouse


Processor Brand: Intel


Model Year: 2024


CPU Model Number: Celeron


Video Processor: Intel


UPC: 194850984754


Manufacturer: hp


Warranty Description: 1 Year Manufacture


Cache Memory Installed Size: 4


Memory Storage Capacity: 16 GB


Memory Slots Available: 2


RAM Memory Installed: 16 GB


RAM Memory Technology: DDR5


Ram Memory Maximum Size: 64 GB


Memory Speed: 5200 MHz


RAM Type: DDR5 RAM


Memory Clock Speed: 4800 MHz


Display Resolution Maximum: 3840x2160


Display Type: External 4K


Aspect Ratio: 169


Resolution: 3840 x 2160


Native Resolution: 3840 x 2160


Wireless Network Technology: Wi-Fi


Connectivity Technology: Ethernet, HDMI, Wi-Fi


Wireless Compability: 802.11ax


Wireless Technology: Wi-Fi


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 15 – Apr 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Solid little machine — does exactly what you need it to
Size: 16GB RAM | 256GB SSD Style: Intel CPU
I've had this unit for a few weeks now, using it for general office and business tasks, and I have zero complaints. It performs exactly as expected — boots up fast, runs smoothly, and handles everyday business workloads without breaking a sweat. The compact form factor is a huge plus. It takes up almost no desk space but still delivers solid performance. For a business environment where you just need a reliable, no-fuss machine, this hits the mark perfectly. No issues whatsoever since setting it up. HP has always been a solid choice for business-grade hardware, and this Mini PC is no exception. If you're looking for a dependable desktop for office use without the bulk of a tower, this is a great pick. Would definitely recommend. ... show more
Reviewed in the United States on March 29, 2026 by Paul A.
    • HP QUALITY IN A SMALL PACKAGE.
Size: 16GB RAM | 256GB SSD Style: Intel CPU
Perfect for most people. Not a gaming or heavy processing computer but it great for everyday use.
Reviewed in the United States on February 21, 2026 by Ronny Elliot Fan
    • Great Buy No Regrets
Size: 16GB RAM | 256GB SSD Style: Intel CPU
This is an excellent buy hooks up to computer or TV screen as monitor. I love my computer small compact and effective. I hope stays with no problem for a long time! Best Xmas gift ever in long time. other family members interested in purchasing also.
Reviewed in the United States on January 25, 2026 by Shereese jurgen
    • Rock solid unit like all of the HP units I run.
Size: 16GB RAM | 256GB SSD Style: Intel CPU
Noise level was is almost silent.
Reviewed in the United States on February 11, 2026 by ROGER WORLEY
    • No mount included, still a good PC
Size: 16GB RAM | 256GB SSD Style: Intel CPU
Computer works great! I got the basic 16G RAM/256G SSD, and it fits nicely on my desk. This bundle comes complete with a WIRED mouse and keyboard, although it unfortunately does not come with a rear monitor mount so the PC can be stored behind your display...
Reviewed in the United States on March 5, 2026 by Matt
    • Space Saving
Size: 16GB RAM | 256GB SSD Style: Intel CPU
This computer is very space saving. Easy to set up.
Reviewed in the United States on January 5, 2026 by MJ Vesey
    • Love my mini computer
Size: 16GB RAM | 256GB SSD Style: Intel CPU
My grandson had me order this Mini PC Desktop computer. I didn't have a clue about it, but it is an awesome computer I love it and it doesn't take up any space at all. Excellent buy.
Reviewed in the United States on October 1, 2025 by Debra Jackson
    • Desktop computing power in a micro footprint!
Size: 16GB RAM | 256GB SSD Style: Intel CPU
The HP Pro 400 G9 Mini PC Desktop Computer offers silent operation for most tasks. But I don't use it for heavy power operations like video post processing. It is a heavy, robust build and has amazing power in a micro footprint for a desktop! There are plenty of ports both front and back. It comes with built-in speakers, but sound is very tinny. Even so, none of the other desktop computers I've ever bought have any audio speakers built in them. So tinny or not, it is a welcome option. It sets up pretty easy, as far as Windows 11 computers go. Overall, I am very happy with it. I plan to buy more of the HP Pro 400 G9 Mini PC Desktop Computers for light to moderate computing power needs in the future. If things change, I will update this review. Daniel D. Teoli Jr. Archival Collection Daniel D. Teoli Jr. Small Gauge Film Archive Daniel D. Teoli Jr. Advertising Archive Daniel D. Teoli Jr. VHS Video Archive Daniel D. Teoli Jr. Popular Culture Archive Daniel D. Teoli Jr. Audio Archive Daniel D. Teoli Jr. Social Documentary Photography ... show more
Reviewed in the United States on November 1, 2025 by Daniel D. Teoli Jr.

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