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Small black tower desktop with wired keyboard and mouse

HP

HP Pro 400 G9 Desktop PC i7-14700 16GB 2TB NVMe Win 11 Pro

SKU CH-DKWT-CWMJY

A compact desktop with an 18-core Intel Core i7-14700, 16GB DDR5 memory, 2TB NVMe storage and Windows 11 Pro for demanding multitasking

  • TypeStudent / Home Office
  • UsageConsumer
  • ProcessorIntel Core i7-14700
  • Processor Main Features64 bit 18-Core Processor
  • Memory16GB DDR5
  • Storage2TB
  • 20-core Intel i7-14700 reaches 5.4 GHz turbo for demanding workloads
  • 16 GB DDR5 at 4800 MHz handles multitasking smoothly
  • 2 TB NVMe SSD stores large project files and apps fast
  • Wi-Fi 6 and Gigabit Ethernet keep connections stable
  • Windows 11 Pro includes business-grade security and management tools

HP Pro 400 G9 Desktop PC

The HP Pro 400 G9 is a new small-form-factor desktop built for home-office and student workloads. It ships with an Intel Core i7-14700 processor, 16GB of DDR5 memory and a 2TB NVMe SSD, running Windows 11 Pro out of the box. A wired keyboard and mouse are included, while a monitor is not.

Thermals, noise and power

The system draws power from an internal 240W supply that feeds the 18-core CPU with a 5.4GHz turbo frequency and integrated Intel UHD Graphics. Integrated graphics keep the thermal load lower than discrete alternatives, helping the compact chassis run quietly during typical productivity tasks. Wi-Fi 6 and Gigabit Ethernet provide connectivity without adding significant heat.

Build fit and expansion

Two video outputs — HDMI and DisplayPort — support up to two external displays for expanded workspace. Four DDR5 slots allow memory upgrades up to 64GB, freeing headroom for heavier multitasking. The small form factor suits tight desk spaces, though the 240W supply limits the addition of power-hungry expansion cards.

Highlights

  • 20-core Intel i7-14700 reaches 5.4 GHz turbo for demanding workloads
  • 16 GB DDR5 at 4800 MHz handles multitasking smoothly
  • 2 TB NVMe SSD stores large project files and apps fast
  • Wi-Fi 6 and Gigabit Ethernet keep connections stable
  • Windows 11 Pro includes business-grade security and management tools

Specifications

BrandHP
ModelPro 400 G9
Part Number9M8Q4AT
TypeStudent / Home Office
UsageConsumer
ProcessorIntel Core i7-14700
Processor Main Features64 bit 18-Core Processor
Memory16GB DDR5
Storage2TB
AudioSound card - Integrated
EthernetGigabit Ethernet
Wireless CardWi-Fi 6 (802.11ax)
Power Supply240W
MonitorMonitor not included
KeyboardWired Keyboard
MouseWired Mouse
Operating SystemWindows 11 Pro
Windows 11Ready
CPU TypeIntel Core
Turbo Frequency5.4GHz
GPU/VGA TypeIntel UHD Graphics
Graphics CardIntel UHD Graphics
Graphics InterfaceIntegrated video
Memory Capacity16GB DDR5
Memory SpeedDDR5 4800
Memory Spec8 GB x 2
Memory Slot (Total)2
Memory Slot (Available)0
Memory Slots (Available/Total)0/2
Maximum Memory Supported64 GB
SSD2 TB
HDDNo
Storage Spec2TB NVMe SSD
Optical Drive TypeNo
Screen SizeNo Screen
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
WLAN802.11ax Wireless LAN
WiFi GenerationWi-Fi 6
BluetoothBluetooth 5.2
Front USB4
Front Audio Ports1
Video Ports1 x HDMI, 1 x DisplayPort
Rear USB5
RJ451 port
Rear Audio Ports1 port
Keyboard TypeWired Keyboard
Mouse TypeWired Mouse
Dimensions (H x W x D)10.63 x 2.74 x 12.12 in
Weight9.59 lb
Package TypeRetail
Package ContentsHP Pro 400 G9 PC, Wired Mouse, Wired Keyboard

Questions about this item

How do I add more memory to the HP Pro 400 G9 small-form-factor desktop?

Power off, open the small-form-factor chassis, insert the DDR5 DIMM at 4800MHz into the vacant slot, then close the case and confirm the new total in Windows.

What maintenance or replacement will the 240W power supply need later?

The 240W internal power supply has no user-serviceable parts; if it fails after the warranty period, replace the entire unit with an HP-compatible SFF power supply.

What thermal limit appears first when the Core i7-14700 runs at 5.4GHz turbo for extended periods?

The 240W power supply and small-form-factor cooling cap sustained turbo; the CPU will throttle below 5.4GHz once the chassis thermal limit is reached.

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