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Compact black Mini PC, small square chassis

HP

HP Pro Mini 400 G9 desktop PC i5-14500T 16 GB DDR5 512 GB NVMe Windows 11 Pro DQ5N8AT#ABA

SKU CH-M5PZ-T0MX1 MPN DQ5N8AT#ABA

A compact desktop with an Intel Core i5 processor, 16 GB DDR5 memory, 512 GB NVMe storage and Windows 11 Pro

  • ProcessorIntel Core i5
  • Memory size16 GB DDR5
  • Storage drive512 GB SSD
  • GPUIntel UHD Graphics 770
  • SSD storage512 GB PCIe NVMe
  • Operating systemWindows 11 Pro
  • Compact Mini PC saves desk space
  • Intel Core i5-14500T with 14 cores handles multitasking
  • 16 GB DDR5 memory runs demanding applications
  • 512 GB NVMe SSD boots Windows 11 Pro fast
  • Wi-Fi 6E and Intel UHD Graphics 770 support modern connectivity

HP Pro Mini 400 G9 Mini PC

The HP Pro Mini 400 G9 is a compact desktop computer built around an Intel Core i5-14500T processor with 16 GB of DDR5 memory and a 512 GB PCIe NVMe SSD. It ships with Windows 11 Pro and uses Intel UHD Graphics 770 for display output, powered by a 90 W supply in a Jack Black chassis.

Suits office workers needing a small footprint

This system fits users who want a space-saving PC for general productivity, web browsing and video conferencing with Wi-Fi 6E connectivity. Buyers who need discrete graphics performance for gaming or rendering, or those requiring multiple internal storage bays, should look at larger form factors.

16 GB DDR5 memory soldered

The 16 GB DDR5 memory is the key specification that determines suitability; it cannot be upgraded after purchase so the buyer must be certain this capacity meets their workload requirements.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $945.99
Pricier than about 75% of the 14,711 comparable items (median $494.99).
Memory size 16 GB DDR5
Typical for this category: the median of 5,840 items is 16 GB.
Storage drive 512 GB SSD
Typical for this category: the median of 3,890 items is 512 GB.

Specifications

Product
Brand nameHP
Product linePro Mini 400 G9
Model namePro Mini 400 G9
Part numberDQ5N8AT#ABA
Product colorJack Black
Processor
ProcessorIntel Core i5
Memory
Memory size16 GB DDR5
Storage
Storage drive512 GB SSD
SSD storage512 GB PCIe NVMe
Graphics
GPUIntel UHD Graphics 770
Power
Power supply90 W
Size & build
Form factorMini PC
Shipping weight2.74 kg
Package size500 × 236 × 132 mm
Software
Operating systemWindows 11 Pro
More details
KeyboardEnglish

Questions about this item

How do I install the 512 GB PCIe NVMe SSD in the Pro Mini 400 G9, and what step do people often miss?

The M.2 slot is inside the chassis; remove the bottom cover, insert the drive at an angle, then secure it with the screw — the step often missed is enabling the NVMe controller in BIOS before cloning or installing Windows.

What maintenance or replacement will the 90 W power supply need later?

The external 90 W adapter is the only field-replaceable power part; keep its vents clear and replace the unit if the barrel connector becomes loose or output voltage drifts.

What limit appears first on the Intel UHD Graphics 770 during sustained workloads?

The 90 W power budget caps combined CPU and GPU turbo, so graphics clocks throttle first once the package hits its thermal ceiling.

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