HP Pro 400 G9 Mini PC Desktop Computer

Name: HP Pro 400 G9 Mini PC Desktop Computer, Intel CPU, 8GB DDR5 RAM, 256GB PCIe SSD, Triple 4K Display Support, USB-C, Ultra-Quiet Design, Bluetooth 5.2
Brand: HP
SKU: B0DQNVKZ8Y

Status: HP Pro 400 G9 Mini PC Desktop Computer (256GB DDR5 desktop DIMM kit): Unavailable on Amazon as of 2026-10-18 16:27 UTC. SpecPicks has no in-stock 256GB DDR5 desktop DIMM kit on file; an Amazon search for "256GB DDR5 desktop DIMM kit" lists current offers with the same specs. eBay sellers may still list this model new or used.

Search Amazon for a 256GB DDR5 desktop DIMM kit → 🛒 Search eBay for this model

Bottom line: The HP Pro 400 G9 Mini PC Desktop Computer is a specs-and-price decision rather than a crowd-consensus one in the memory (ram) category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

Unavailable on Amazon as of 2026-10-18 16:27 UTC

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Search Amazon for an in-stock 256GB DDR5 desktop DIMM kit → Original listing (currently unavailable) → Compare to similar memory (ram)

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Backed by HP's warranty and support channels

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

About this item 【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…

SpecPicks Verdict

SpecPicks scored HP Pro 400 G9 Mini PC Desktop Computer using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. HP's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key 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 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.

Full Specifications

UPC	194850843099
ASIN	B0DQNVKZ8Y
Brand	HP
Color	Black
RAM Type	DDR5 RAM
CPU Model	Celeron
CPU Speed	2.8 GHz
Cache Size	4 MB
Model Name	Pro 400
Model Year	2024
Resolution	3840 x 2160
Aspect Ratio	169
Display Type	External Display
Manufacturer	hp
Memory Speed	5200 MHz
Model Number	G9
Video Output	HDMI, DisplayPort
Built-In Media	Keyboard, Mouse
Cooling Method	Air
Item Dimensions	19.5 x 5 x 9 inches
Full listing title	HP Pro 400 G9 Mini PC Desktop Computer, Intel CPU, 8GB 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

Ready to buy?

Amazon shows no buyable offer for HP Pro 400 G9 Mini PC Desktop Computer at the last check. An Amazon search for "256GB DDR5 desktop DIMM kit" lists current offers. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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