



Product description


Stay Productive with the Small Form Factor (SFF) or Mini models
The HP Pro series offers two compact desktop solutions tailored for business environments.
Intel Dual-Core Processor Delivers smooth business performance with integrated UHD Graphics for sharp visuals and reliable multitasking. High-Speed Memory Equipped with fast and responsive memory to support smooth multitasking, quick app loading, and consistent day-to-day performance. Built-in DisplayPort and HDMI Easily connect to TVs or multiple monitors for an immersive HD viewing experience—perfect for both work and entertainment. Essential Accessories Included Comes ready with a full-size wired keyboard and mouse for a complete desktop experience.

SFF Front Ports
1 headphone/microphone combo1 SuperSpeed USB Type-C 10Gbps signaling rate3 SuperSpeed USB Type-A 10Gbps signaling rate

SFF Rear Ports
1 power connector1 audio-out1 RJ-451 HDMI 1.43 SuperSpeed USB Type-A 5Gbps signaling rate1 DisplayPort 1.42 USB Type-A 480Mbps signaling rate

Mini Front Ports
1 headphone/microphone combo1 SuperSpeed USB Type-A 10Gbps signaling rate1 SuperSpeed USB Type-A 10Gbps signaling rate (charging)1 SuperSpeed USB Type-C 20Gbps signaling rate

Mini Rear Ports
1 power connector1 RJ-451 SuperSpeed USB Type-A 10Gbps signaling rate2 SuperSpeed USB Type-A 5Gbps signaling rate2 DisplayPort 1.4HDMI 2.1

Enhanced Security with Windows 11 Pro
Protected with always-on security you can trust. This series comes pre-installed with Windows 11 Pro—offering advanced security features, powerful productivity tools, and a streamlined interface. It’s the ideal choice for business professionals and hybrid work environments that demand performance and peace of mind.

Key Differences Forn Factor: SFF is larger, while the Mini is significantly smaller Expansion: The SFF offers more expansions options than the Mini. Memory: The SFF supports higher RAM capacities Processor: The Mini uses a lower power model
SFF Dimensions:
11.9 x 10.6 x 3.7 in
Mini Dimensions:
6.97 x 6.89 x 1.35 in
HP offers a range of desktop solutions, including Small Form Factor (SFF) and Mini PCs.
SFF models strike a balance between performance and compactness—smaller than traditional towers, yet more expandable than Minis. Mini PCs, on the other hand, offer ultra-compact designs ideal for tight workspaces without compromising essential power.
Both are built for dependable performance, advanced security, and efficient space utilization, making them versatile choices for a variety of professional environments.
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Customer Reviews
4.5 out of 5 stars 93
4.4 out of 5 stars 212
5.0 out of 5 stars 2
4.9 out of 5 stars 12
3.0 out of 5 stars 2
3.6 out of 5 stars 10
Price
$499.99$499.99 $769.99$769.99 $699.99$699.99 $599.99$599.99 $1,049.99$1,049.99
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Processor
Intel Celeron G6900T Intel Celeron G6900 Intel Core i3-13100 Intel i3-13100T Intel Core i5-13500 Intel Core i5-1335U
CPU Base Speed
2.8 GHz 3.4 GHz 3.4 GHz 2.5 GHz 4.8 GHz 1.3 GHz
OS
Windows 11 Pro Windows 11 Pro Windows 11 Pro Windows 11 Pro Windows 11 Pro Windows 11 Pro
Memory Size
16 GB 32 GB 16 GB 16 GB 32 GB 32 GB
Storage Size
256 GB 1 TB 512 GB 512 GB 1 TB 1 TB
【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 HP’s legacy of reliability and innovation. Crafted with premium materials, it’s 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 tools—all supported by HP’s quality guarantee.
8 reviews for 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
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$499.99
Paul A. –
Solid little machine — does exactly what you need it to
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.
Ronny Elliot Fan –
HP QUALITY IN A SMALL PACKAGE.
Perfect for most people. Not a gaming or heavy processing computer but it great for everyday use.
Shereese jurgen –
Great Buy No Regrets
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.
Cindy Reynolds –
GREAT little COMPACT COMPUTER! THANK YOU HP!
This little piece of NOTHING has worked VERY well for me! It IS an HP product, after all. It takes up almost NO space but is ALWAYS there for me! It takes me wherever I want to go online, so I have NO complaints about it! It’s compact, effective and VERY affordable for me as a Senior and computer DOOFUSS!
Matt –
No mount included, still a good PC
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…
ROGER WORLEY –
Rock solid unit like all of the HP units I run.
Noise level was is almost silent.
Debra Jackson –
Love my mini computer
My grandson had me order this Mini PC Desktop computer. I didn’t have a clue about it, but it is an awesome computerI love it and it doesn’t take up any space at all. Excellent buy.
Daniel D. Teoli Jr. –
Desktop computing power in a micro footprint!
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 CollectionDaniel D. Teoli Jr. Small Gauge Film ArchiveDaniel D. Teoli Jr. Advertising ArchiveDaniel D. Teoli Jr. VHS Video ArchiveDaniel D. Teoli Jr. Popular Culture ArchiveDaniel D. Teoli Jr. Audio ArchiveDaniel D. Teoli Jr. Social Documentary Photography