HP Pro Mini 400 G9 Jack black
The 14-core Intel Core i5-14500T and 16GB DDR5 RAM drive efficient multitasking in a 1.41kg chassis with a low-power 90W supply. HP Wolf Pro Security Edition provides always-on hardware-enforced protection, while the port array with HDMI 2.1, DisplayPort, and USB-C ensures flexible connectivity. It’s a secure, space-saving choice for business professionals and home office users handling web-based productivity tasks, document workflows, and video conferencing.
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About HP Pro Mini 400 G9FEATURED REVIEWSQuality you expect from HPBy marconiQuality you expect from HPNice compact form and quiet. Plenty of USB ports.By DrKJNice compact form. Would like to have an option of ordering without all the HP branded software.The HP Pro Mini 400 provides users with the commercial-grade performance, security, and the flexible deployment capabilities needed for small, varied workspaces. This reliable, ultra-small PC is powered to handle mainstream enterprise and SMBs with an Intel processor and protected with always-on security you can trust.Latest Intel processorAccomplish everything from minor tasks to complex projects with the latest Intel Core i5-14500T processor.Flex ports for easy expansionConfigure or expand your Mini your way with flex ports for legacy or clean desk connectivity.Protected by HP Wolf SecurityHP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense.Help protect our shared futureA high-efficiency power supply and molded-pulp packaging help reduce the impact on the environment.Windows 11 ProWork anywhere without compromising on performance or security with Windows 11 Pro powered by HP's collaboration and connectivity technology.Latest Intel multi-core processorConfigure your HP Pro Mini 400's CPU for the perfect combination of power, snappy performance, and value. With the latest Intel Core i5-14500T processor, handle multiple work tasks smoothly and reliably with multiple processing cores to divide up the work.Security is your top priorityThe HP Wolf Pro Security Edition provides preconfigured enterprise-level PC protection for small and medium sized businesses.Advanced wireless connectivityGet a premium connectivity experience, even in crowded wireless networks, with a fast, reliable wireless connection. This Pro Mini 400's gigabit data rate Wi-Fi 6E wireless LAN module supports HP Extended Range Wireless LAN.Automatic recovery from firmware attacksFirmware attacks can completely devastate your PC. Stay protected with HP's self-healing BIOS - HP Sure Start Gen7 automatically recovers the BIOS from malware, rootkits, or corruption.Work without interruptionKeep productivity high and downtime low with the fully integrated and automated features of the HP BIOSphere Gen6 firmware ecosystem. Your PCs have extra protection thanks to automatic updates and security checks.Browse confidentlyHelp protect your PC from websites and read only Microsoft Office and PDF attachments with embedded malware, ransomware, or viruses with hardware-enforced security from HP Sure Click.Erase your driveHP Secure Erase removes the contents of a hard drive for repurposing or reassignment.Simple PC managementSpend less time and get right to the updates you need with HP Support Assistant.Speed up the basics of IT managementThe HP Manageability Integration Kit helps speed up image creation and management of hardware, BIOS, and security through Microsoft System Center Configuration Manager.HP Pro Mini 400 G9 FeaturesMini Form Factor desktop compact size with reduced footprint, perfect for usersFeatures Latest 14th Gen Intel Core i5-14500T 1.7GHz processor delivers outstanding performance16GB DDR5 RAM Memory Provides Enhanced multitasking and Improved performance256GB SSD gives significantly faster speed and improved overall system responsivenessEfficiently manage multi-tasking with Windows 11 Pro, also provide performance & stability to your devicePowerful UHD Graphics 770 delivering stunning visuals and smooth performance6x USB, 1x HDMI & 1x RJ-45 ports that enhance connectivity, functionality and versatilityWi-Fi 6E enables faster internet speeds and improved network performance
Product Information provided by the Manufacturer
HP Pro Mini 400 G9 Desktop PC Wolf Pro Security Edition
Latest Intel® processorAccomplish everything from minor tasks to complex projects with the latest Intel® processor.1
Flex ports for easy expansionConfigure or expand your Mini your way with flex ports for legacy or clean desk connectivity.
Protected by HP Wolf SecurityHP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense.2
Windows 11Work anywhere without compromising on performance or security with Windows 11 powered by HP's collaboration and connectivity technology.Latest Intel® multi-core processorConfigure your HP Pro Mini 400’s CPU for the perfect combination of power, snappy performance, and value. With the latest Intel® processor, handle multiple work tasks smoothly and reliably with multiple processing cores to divide up the work.Security is your top priorityThe HP Wolf Pro Security Edition provides preconfigured enterprise-level PC protection for small and medium sized businesses.3
Advanced wireless connectivityGet a premium connectivity experience, even in crowded wireless networks, with a fast, reliable wireless connection. This Pro Mini 400’s gigabit data rate Wi-Fi 6E wireless LAN module supports HP Extended Range Wireless LAN.4Automatic recovery from firmware attacksFirmware attacks can completely devastate your PC. Stay protected with HP’s self-healing BIOS - HP Sure Start Gen7 automatically recovers the BIOS from malware, rootkits, or corruption.Work without interruptionKeep productivity high and downtime low with the fully integrated and automated features of the HP BIOSphere Gen6 firmware ecosystem. Your PCs have extra protection thanks to automatic updates and security checks.5
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Processor Intel® Core™ i5 14500T
Graphics Intel® UHD Graphics 770
Memory 16 GB DDR5
Operating System Windows 11 Pro6
Hard drives 256 GB SSD
Connectivity standard Intel® Wi-Fi 6E AX211
Ports 1 headphone/microphone combo 1 SuperSpeed USB Type-A 10Gbps signaling rate 1 SuperSpeed USB Type-A 10Gbps signaling rate (charging) 1 SuperSpeed USB Type-C® 20Gbps signaling rate 1 power connector 1 RJ-45 1 SuperSpeed USB Type-A 10Gbps signaling rate 2 SuperSpeed USB Type-A 5Gbps signaling rate 2 DisplayPort™ 1.4 1 HDMI 2.1
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footnote1 Multicore is designed to improve performance of certain software products. Not all customers or software applications will necessarily benefit from use of this technology. Performance and clock frequency will vary depending on application workload and your hardware and software configurations. Intel’s numbering, branding and/or naming is not a measurement of higher performance.
footnote2 HP Wolf Security for Business requires Windows 10 or 11 Pro or higher, includes various HP security features and is available on HP Pro, Elite, Workstation, and RPOS products. See product details for included security features.
footnote3 This product includes a one (1) year license of HP Wolf Pro Security Edition which includes HP Sure Click Pro and HP Sure Sense Pro. The HP Wolf Pro Security Edition software is licensed under the license terms of the HP End User License Agreement (EULA) that can be found at: https://support.hp.com/us-en/document/ish_3875769-3873014-16 as modified by the following: “7. Term. Unless otherwise terminated earlier pursuant to the terms contained in this EULA, the license for the HP Wolf Pro Security Edition (HP Sure Sense Pro and HP Sure Click Pro) is effective upon activation and will continue for twelve (12) months thereafter (“Initial Term”). At the end of the Initial Term you may either (a) purchase a renewal license for the HP Wolf Pro Security Edition from HP.com, HP Sales or an HP Channel Partner, or (b) continue using the standard versions of HP Sure Click and HP Sure Sense at no additional cost with no future software updates or HP Support.”
footnote4 Wi-Fi 6E requires a Wi-Fi 6E router, sold separately, to function in the 6GHz band. Availability of public wireless access points limited. Wi-Fi 6E is backwards compatible with prior 802.11 specs and available in countries where Wi-Fi 6E is supported. Wi-Fi®️ supporting gigabit data rate is achievable with Wi-Fi 6E (802.11ax) when transferring files between two devices connected to the same router. Requires a wireless router, sold separately, that supports 160MHz channels.
footnote5 HP BIOSphere Gen6 requires Windows 10 and is available on select HP Pro and Elite PCs. Features may vary depending on the platform and configurations.
footnote6 Not all features are available in all editions or versions of Windows. Systems may require upgraded and/or separately purchased hardware, drivers, software or BIOS update to take full advantage of Windows functionality. Windows is automatically updated and enabled. High speed internet and Microsoft account required. ISP fees may apply and additional requirements may apply over time for updates. See http://www.windows.com.
footnote7 Multi-core is designed to improve performance of certain software products. Not all customers or software applications will necessarily benefit from use of this technology. Performance and clock frequency will vary depending on application workload and your hardware and software configurations. Intel’s numbering, branding and/or naming is not a measurement of higher performance.
footnote8 Intel® Turbo Boost performance varies depending on hardware, software and overall system configuration. See http://www.intel.com/technology/turboboost/ for more information.
footnote9 For full Intel® vPro® functionality, Windows 10 Pro 64 bit, a vPro supported processor, vPro enabled chipset, vPro enabled wired LAN and/or WLAN card and TPM 2.0 are required. Some functionality requires additional 3rd party software in order to run. See http://intel.com/vpro
footnote10 Exact weight depends on configuration.
footnote11 1 M.2 slot for WLAN and 1 M.2 2280 slot for storage.
footnote12 HP Sure Click requires Windows 10 Pro or higher or Enterprise. See https://bit.ly/2PrLT6A_SureClick for complete details.
footnote13 HP Sure Sense is available on select HP PCs with Windows 10 Pro, Windows 10 Enterprise, Windows 11 Pro, or Windows 11 Enterprise OS.
footnote14 HP Sure Start Gen7 is available on select HP PCs and requires Windows 10 and higher.
footnote15 HP Sure Admin requires Windows 10 or higher, HP BIOS, HP Manageability Integration Kit from http://www.hp.com/go/clientmanagement and HP Sure Admin Local Access Authenticator smartphone app from the Android or Apple store.
footnote16 HP BIOSphere Gen6 features may vary depending on the platform and configuration.
footnote17 For the methods outlined in the National Institute of Standards and Technology Special Publication 800-88 "Clear" sanitation method. HP Secure Erase does not support platforms with Intel® Optane™.
footnote18 Absolute firmware module is shipped turned off and can only be activated with the purchase a license subscription and full activation of the software agent. License subscriptions can be purchased for terms ranging multiple years. Service is limited, check with Absolute for availability outside the U.S. Certain conditions apply. For full details visit: https://www.absolute.com/about/legal/agreements/absolute/.
footnote20 HP Connect for Microsoft Endpoint Manager is available from the Azure Market Place for HP Pro, Elite, Z and Point-of-Sale PCs managed with Microsoft Endpoint Manager. Subscription to Microsoft Endpoint Manager required and sold separately. Network connection required.
footnote21 HP Patch Assistant available on select HP PCs with the HP Manageability Kit that are managed through Microsoft System Center Configuration Manager. HP Manageability Integration Kit can be downloaded from http://www8.hp.com/us/en/ads/clientmanagement/overview.html .
footnote22 HP Manageability Integration Kit can be downloaded from http://www.hp.com/go/clientmanagement .
© Copyright 2025 HP Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
Join VIP PROEarn 2X Points + Exclusive Perks!Sell or Trade your GearGet started in 3 easy stepsKey FeaturesExperience seamless multitasking with 16GB RAM on this HP Pro Mini Desktop PC.The Intel Core i5 processor delivers exceptional processing speed for demanding tasks.Enjoy fast boot-ups and ample storage space with the 256GB SSD for your files.Compact mini design fits perfectly in any workspace, ideal for home or office.Enhanced security features protect your data with HP Wolf Pro Security Edition.Connect all your peripherals easily with multiple USB ports and DisplayPort 1.4.What's in the box:HP Pro Mini 400 G9 Desktop Mini PC (Jack black)Wired USB 320K KeyboardWired USB 125 Mouse90W External Power Supply5.9' Power CordWolf Pro Security Edition Software License (1 Year)HP 1 Year Limited Warranty
- Experience seamless multitasking with 16GB RAM on this HP Pro Mini Desktop PC.
- The Intel Core i5 processor delivers exceptional processing speed for demanding tasks.
- Enjoy fast boot-ups and ample storage space with the 256GB SSD for your files.
- Compact mini design fits perfectly in any workspace, ideal for home or office.
- Enhanced security features protect your data with HP Wolf Pro Security Edition.
- Connect all your peripherals easily with multiple USB ports and DisplayPort 1.4.
The 30-Second Version
The HP Pro Mini 400 G9 is a pint-sized Windows desktop with a 14-core i5, 16GB DDR5, and a wealth of ports. It's whisper-quiet and built like a tank, but the integrated graphics are underwhelming and the 256GB SSD is stingy. At $745 it's a decent business mini; at the high end of its price range it's shockingly overpriced. Unless you need Windows in a tiny, port-heavy box, the Mac mini M4 offers far more oomph for less cash.
Overview
The HP Pro Mini 400 G9 sits at the intersection of two trends that have reshaped office computing: the move toward compact, energy-efficient mini PCs and the need for hardware-level security that doesn't require a dedicated IT army. HP stuffed a full-fledged 14-core Intel Core i5-14500T, 16GB of DDR5 memory, and Windows 11 Pro into a chassis you can literally hide behind a monitor. It's aimed squarely at businesses, home offices, and anyone who wants a quiet, unobtrusive desktop that handles spreadsheets, Zoom calls, and a dozen browser tabs without complaint.
What catches your eye first is the port situation. You get six USB-A ports (a mix of fast and legacy), a USB-C, DisplayPort 1.4 out, an HDMI 2.1 port, and gigabit Ethernet. That's more connectivity than many full-size towers, and it's a clear signal that HP understands the realities of desk life: dongles stink, and separate hubs add clutter. Add in Wi-Fi 6E and you've got a machine ready for modern wireless networks too.
But there are a couple of asterisks that keep this from being a no-brainer recommendation. The integrated Intel graphics are fine for 2D work but utterly outclassed by even a $40 add-in card from five years ago. And the 256GB NVMe SSD, while speedy, lands in the bottom fifth of all desktop storage we track. That's a crunchy amount of space once Windows 11 Pro and a few Office 365 apps settle in. Still, if you're deploying dozens of these into a call center or a clinic, the combination of size, quiet operation, and HP's Wolf Security make a strong case.
Performance
We don't have synthetic benchmark numbers for this exact config yet, but our mini PC database paints a clear picture. The Core i5-14500T, a 35W chip with six performance cores and eight efficiency cores, falls right around the middle of the desktop CPU pack. For everyday office chores it feels snappy, Outlook, Teams, and a pile of Chrome tabs don't phase it. The 16GB of DDR5 is about average, giving you enough headroom for multitasking but not much more if you're a power user who likes to keep 30 tabs and a bloated CRM running all day.
The real drag is the GPU. Intel's integrated UHD Graphics 770 sits in the lower third of all desktops we test, and our gaming suitability score for this machine is a sad 11.6 out of 100. Don't expect to play anything newer than Stardew Valley or maybe CS:GO at low settings. It's fine for driving a couple of 4K displays for productivity, but if your workflow touches even light photo editing or CAD, the GPU will quickly become the bottleneck. Storage capacity is equally underwhelming; the 256GB SSD is among the stingiest we've seen in this category, meaning you'll be reaching for an external drive or cloud sync sooner rather than later. The drive itself is NVMe, so boot times are brisk, but capacity is the achilles heel.
Pros & Cons
Pros
- Impressively compact—fits behind a monitor or in a tiny desk nook. 95th
- Loaded with ports: 6 USB-A, USB-C, DisplayPort 1.4, HDMI 2.1, Ethernet. 72th
- Nearly silent under typical office workloads. 66th
- HP Wolf Pro Security is genuinely useful for small businesses without dedicated IT.
- Solid build quality and reliable track record (customer satisfaction ranks in the top tier).
Cons
- Integrated GPU is anaemic—gaming and GPU-accelerated tasks are a no-go. 13th
- 256GB SSD is cramped; many phones ship with more storage than this. 32th
- No Thunderbolt support limits high-speed peripheral expansion.
- Pre-installed HP bloatware can be a nuisance out of the box.
- Price climbs fast; some vendors list this config over $1,700, which is absurd for these specs.
The Word on the Street
Specifications
Full Specifications
Processor
| CPU | Intel Core i5 14500T |
| Cores | 14 |
| Frequency | 1.7 GHz |
| L3 Cache | 24 MB |
Graphics
| GPU | Intel UHD Graphics 770 |
| Type | integrated |
| VRAM Type | Shared |
Memory & Storage
| RAM | 16 GB |
| RAM Generation | DDR5 |
| Storage | 256 GB |
| Storage Type | SSD |
Build
| Form Factor | mini |
| PSU | 90 |
| Weight | 1.4 kg / 3.1 lbs |
Connectivity
| USB-C Ports | 1 |
| USB Ports | 5 |
| HDMI | 1x HDMI 2.1 |
| DisplayPort | 2x DisplayPort 1.4 |
| Wi-Fi | Wi-Fi 6E |
| Bluetooth | Bluetooth 5.3 |
| Ethernet | Gigabit Ethernet |
System
| OS | Windows 11 Pro |
Value & Pricing
HP's official pricing is all over the map, and that's being kind. We've seen retailers list this exact configuration from $745 all the way up to $1,771. If you can snag one around the $745 mark, you're getting a well-built, secure mini PC that undercuts many of HP's own smaller business desktops. But if you're staring down a $1,300 or higher price tag, something's gone wrong. At that point, you could buy an Apple Mac mini M4 with a faster CPU, vastly superior GPU, and the same 256GB storage for $599, or a 512GB version for $799.
The value proposition hinges entirely on your need for Windows and legacy ports. For an IT department managing a fleet of these with existing images and group policies, the HP's manageability and security suite might justify a premium. For a freelancer or home office user who just needs a tiny PC, the Mac mini offers a lot more horsepower per dollar, even if you have to live with macOS and a dongle or two.
vs Competition
There's no escaping the elephant in the room: the Apple Mac mini M4. It's even smaller, starts at $599, and its M4 chip absolutely demolishes the Intel i5-14500T in both CPU and GPU tasks. The HP fights back with Windows 11 Pro, a glut of USB-A ports, an HDMI 2.1 and DisplayPort 1.4, and HP Wolf Security. If you're locked into a Windows ecosystem, need to plug in a half-dozen legacy peripherals without a USB-C hub, or require manageability tools like HP Image Assistant, the Pro Mini 400 G9 is the obviously better pick. But for raw performance per cubic inch, the Mac mini wins without breaking a sweat.
Then there are the full-sized gaming towers that show up in this price bracket. The Lenovo Legion Tower 5i, ASUS ROG G700, and MSI Aegis RS2 all offer dedicated GPUs, faster processors, and easy upgradability for roughly the same money as a high-priced Pro Mini. They're hulking and they'll light up your desk like a rave, but they'll also play modern games at 1440p and chew through video renders. If you don't need the ultra-compact form factor and you do anything graphically intensive, one of these towers is a far smarter buy. The HP simply can't compete in GPU-bound workloads.
| Spec | HP Pro Mini 400 G9 | ASUS Republic of Gamers GM700TZ-BS978 | Lenovo Legion Tower 5i Legion Tower 5i Gen 10 | MSI EdgeXpert EdgeXpert-11SUS | Dell Tower Plus DEBT2250-7177BLK-PUS | Corsair ONE i600 |
|---|---|---|---|---|---|---|
| CPU | Intel Core i5 14500T | AMD Ryzen 9 9950X | Intel Core Ultra 7 265F | ARM | Intel Core Ultra 7 265 | Intel Core Ultra 9 285K |
| RAM (GB) | 16 | 64 | 32 | 128 | 32 | 64 |
| Storage (GB) | 256 | 2048 | 2048 | 4096 | 1024 | 2048 |
| GPU | Intel UHD Graphics 770 | AMD Radeon RX 9070 XT | NVIDIA GeForce RTX 5070 | NVIDIA Blackwell GPU | NVIDIA GeForce RTX 5070 | NVIDIA GeForce RTX 5080 |
| Form Factor | mini | mid-tower | mid-tower | mini | mid-tower | sff |
| Psu W | 90 | 850 | 850 | 240 | 750 | 1000 |
| OS | Windows 11 Pro | Windows 11 Home | Windows 11 Home | Windows 11 Pro | Windows 11 Home | Windows 11 Home |
| Compare | Compare | Compare | Compare | Compare |
| Product | Cpu | Gpu | Ram | Port | Storage | Reliability | Social Proof |
|---|---|---|---|---|---|---|---|
| HP Pro Mini 400 G9 | 53.7 | 31.8 | 47.9 | 65.9 | 12.6 | 71.6 | 95.3 |
| ASUS Republic of Gamers GM700TZ-BS978 Compare | 98.8 | 77.4 | 94.2 | 97.6 | 90.9 | 39.9 | 71.6 |
| Lenovo Legion Tower 5i Legion Tower 5i Gen 10 Compare | 86.6 | 81.4 | 81.9 | 89.9 | 90.9 | 71.6 | 95.3 |
| MSI EdgeXpert EdgeXpert-11SUS Compare | 99.6 | 95.5 | 98.9 | 88 | 97.3 | 39.9 | 83.2 |
| Dell Tower Plus DEBT2250-7177BLK-PUS Compare | 88.8 | 81.4 | 77.8 | 98.7 | 72.6 | 71.6 | 82.7 |
| Corsair ONE i600 Compare | 97.7 | 88.3 | 98.1 | 97.6 | 90.9 | 34.3 | 0 |
Common Questions
Q: Can I upgrade the RAM or storage?
Yes, the HP Pro Mini 400 G9 uses standard SO-DIMM DDR5 slots, so you can pop the hood and upgrade to 64GB if needed. The M.2 SSD is also user-accessible, so swapping in a larger NVMe drive is straightforward, though it might void the warranty if HP didn't intend for end-user upgrades.
Q: Does it support dual monitors?
It absolutely does. With both a DisplayPort 1.4 and an HDMI 2.1 port on the back, you can drive two 4K displays at 60Hz simultaneously, which is perfect for multitasking in a corporate or home office setup.
Q: Can this handle light gaming or Photoshop?
The integrated Intel UHD Graphics 770 can run older or less demanding titles at low settings, but it'll struggle with anything from the last five years. Basic photo editing works, but complex filters or large files will feel sluggish. If you need any kind of GPU muscle, you'll want a system with a discrete graphics card.
Q: Is it noisy?
Under normal office workloads, the fan is barely audible—most people won't notice it at all. It only ramps up during sustained CPU-intensive tasks, and even then it's quieter than the average business laptop's cooling whine.
Who Should Skip This
If you plan on gaming, video editing, 3D modeling, or any task that leans on a GPU, skip this machine entirely. The integrated graphics simply can't keep up, and a $750–$1,000 gaming tower will deliver a dramatically better experience. Likewise, if you need more than 256GB of local storage right out of the box without cracking open the case, look elsewhere—this config fills up fast with Windows and a handful of apps. Creative pros who want a compact Windows powerhouse should consider a small-form-factor system with a dedicated GPU or even a mini PC from Minisforum or Intel NUC that offers a discrete laptop-grade GPU. And if you're comfortable with macOS, the Mac mini M4 blows the HP out of the water on performance and price, unless you absolutely need those six USB-A ports.
Verdict
For the right use case, the HP Pro Mini 400 G9 is a quiet, no-fuss desktop that disappears into a workspace. We'd happily recommend it for business deployments where size, security, and reliable Ethernet/USB-A connectivity are top priorities. Think reception desks, point-of-sale systems, medical offices, or remote workstations that need to sit behind a monitor and never be heard. It handles everyday productivity without breaking a sweat, and HP's support and security tools give IT admins peace of mind.
But for anyone whose work or play goes beyond Outlook and Excel, there are simply too many trade-offs. The integrated graphics are a dealbreaker for creative work or gaming, and the small SSD guarantees you'll hit a capacity wall quickly. Upgrading the storage is possible, but that adds cost and time. If you have the flexibility, the Apple Mac mini M4 is the better compact PC, and if you can tolerate a larger chassis, a gaming desktop like the Lenovo Legion Tower 5i delivers orders of magnitude more GPU power for the same dollars. The Pro Mini 400 G9 is a specialist, and it's worth it only if you fit its narrow niche.