Designed to fit the modern workspace with a compact, stylish appearance, the ultra-small HP ProDesk 400 Desktop Mini is an affordable PC with reliability and performance for your growing business.
Powerful and configurable
Power through your day with a solution you can flexibly configure with an 8th Gen Intel® Core™ processor and options that include SSD storage, and up to 32 GB of DDR4 memory.
Expansion that extends your investment
Maximize the life of your PC as your business requirements change with a wide range of storage options such as the latest M.2 slots, traditional SATA drives, and configurable ports to connect up to three HP displays.
Place it where you need it
Take your footprint down to near zero with a PC that attaches behind an HP EliteDisplay, or mount and secure it almost anywhere with HP accessories. Declutter your space with short cables and rear I/O ports that connect to a range of displays.
HP-exclusive security and manageability
Help prevent data breaches and downtime with HP BIOSphere Gen4 and protect against web-based attacks with HP Sure Click. Easily manage devices through Microsoft System Center Configuration Manager with HP Manageability Integration Kit.
 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 10 is automatically updated, which is always enabled. ISP fees may apply and additional requirements may apply over time for updates. See http://www.windows.com/.
 Some devices for academic use will automatically be updated to Windows 10 Pro Education with the Windows 10 Anniversary Update. Features vary; see https://aka.ms/ProEducation for Windows 10 Pro Education feature information.
 For hard drives and solid state drives, GB = 1 billion bytes. TB = 1 trillion bytes. Actual formatted capacity is less. Up to 36 GB (for Windows 10) of system disk is reserved for the system recovery software.
 Your product does not support Windows 8 or Windows 7. In accordance with Microsoft’s support policy, HP does not support the Windows 8 or Windows 7 operating system on products configured with Intel® and AMD 7th generation and forward processors or provide any Windows 8 or Windows 7 drivers on http://www.support.hp.com
 EPEAT® registered where applicable. EPEAT registration varies by country. See www.epeat.net for registration status by country. See HP’s 3rd party option store for solar energy accessory at www.hp.com/go/options.
 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 is not a measurement of higher performance. Intel, Pentium, Intel Core, Celeron, Intel logo and the Intel Inside logo are trademarks of Intel Corporation in the U.S. and other countries.
 Intel® Turbo Boost performance varies depending on hardware, software and overall system configuration. See http://www.intel.com/technology/turboboost/ for more information.
 Wireless access point and internet service required.
 Availability may vary by country.
 External power supplies, power cords, cables and peripherals are not Low Halogen. Service parts obtained after purchase may not be Low Halogen.
 HP BIOSphere Gen4 requires Intel® or AMD 8th Gen processors. Features may vary depending on the platform and configurations.
 HP Native Miracast Support: Miracast is a wireless technology your PC can use to project your screen to TVs, projectors, and streaming.
 HP Driver Packs: HP Driver Packs not preinstalled, however available for download at http://www.hp.com/go/clientmanagement.
 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.
 Secure Erase for the methods outlined in the National Institute of Standards and Technology Special Publication 800-88 "Clear" sanitation method.
 HP Support Assistant requires Windows and Internet access.
 Windows Defender Opt In, Windows 10, and internet connection required for updates.
 HP Sure Click is available on most HP PCs and supports Microsoft® Internet Explorer and Chromium™. Supported attachments include Microsoft Office (Word, Excel, PowerPoint) and PDF files in read only mode, when Microsoft Office or Adobe Acrobat are installed.
 HP Management Integration Kit for Microsoft System Center Configuration Management Gen 2: can be downloaded from http://www8.hp.com/us/en/ads/clientmanagement/overview.html
 Ivanti Management Suite: subscription required.
 HP Client Security Suite Gen 4: HP Client Security Suite Gen 4 requires Windows and Intel® or AMD 8th generation processors.
 HP Password Manager requires Internet Explorer or Chrome™ or Firefox. Some websites and applications may not be supported. User may need to enable or allow the add-on / extension in the internet browser.
 Trusted Platform Module TPM 2.0 Embedded Security Chip shipped with Windows 10 (Common Criteria EAL4+ Certified)(FIPS 140-2 Level 2 Certified): In some scenarios, machines pre-configured with Windows OS might ship with TPM turned off.
 When configurable I/O port has been configured, one DisplayPort™ may be blocked in select configurations.
 Intel® Turbo Boost technology requires a PC with a processor with Intel Turbo Boost capability. Intel Turbo Boost performance varies depending on hardware, software and overall system configuration. See www.intel.com/technology/turboboost for more information.
 Intel® Optane™ memory system acceleration does not replace or increase the DRAM in your system and requires configuration with an optional Intel® Core™ i(5 or 7)+ processor.
 (1) Configurable port: Choice of Serial, DisplayPort™ 1.2, HDMI 2.0, HDMI 2.0 with one DisplayPort™ blocked, VGA, VGA with one DisplayPort™ blocked, USB 3.1 Type-C™ Gen 2 (DisplayPort™), sold separately or as an optional feature.
 HP Drive Lock is not supported on NVMe drives.