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HP 3DQ47AV CTO ProOne 400 G4 20" Non-Touch All-in-One Business PC



Easy to deploy, sleek, and feature-rich, the HP ProOne 400 20" All-in-One PC features a contemporary design with business-class performance, collaboration, security, and manageability features.

  • Windows 10 Pro or other operating systems available

Sleek, elegant design

Stylish design and clean lines makes this AiO suitable for a front desk or an open office for space-constrained work environments.

Powerful options

Get high-performance and expansion with 8th gen Intel® Core™ processors2 and optional features like Intel® Optane™ memory3, discrete graphics4, USB Type-C™, and a configurable I/O port5.

Executive-class collaboration

Interact naturally with your PC using Cortana on Windows 10 Pro.1 Enjoy impressive collaboration tools like HP Noise Cancellation and optional Skype for Business™ 6.

HP exclusive security and manageability

Help prevent data breaches and downtime with HP BIOSphere Gen48 and simplify management with HP Manageability Integration Kit Gen29.


Let nothing stand in your way

  • Be productive in any situation. Windows 10 Pro and powerful security, collaboration, and connectivity features from HP help you power through your day.
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Expansion that extends your investment

  • Maximize the life of your PC as your business requirements change with options that let you expand on your own schedule, including M.2 drives, SATA drives, and up to 32GB of DDR4 memory.Be productive
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Work without interruption

  • Keep productivity high and downtime low with HP BIOSphere Gen4 firmware-level automation. Your PCs have extra protection thanks to automatic updates and security checks.
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Super secure. Super protected.

  • Guard your data, device and identity with HP Client Security Manager Gen4.
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Browse confidently

  • Help protect your PC from websites, attachments, malware, ransomware, and viruses with hardware-enforced security from HP Sure Click.
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Speed up the basics of IT management

  • The HP Manageability Integration Kit Gen2 helps speed up image creation and management of hardware, BIOS, and security through Microsoft System Center Configuration Manager.
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Maximize network performance

  • Greatly improve data, voice, and video communication transfer rates over challenged LAN and Wi-Fi networks.

Several deployment options

  • Pair this space-saving AiO with the mounting option to fit your workspace and use case.
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  • Windows 10 Pro or other operating systems available


System features

Operating system

Windows 10 Home 64 – HP recommends Windows 10 Pro.

Processor family

8th Generation Intel® Core™ i5 processor


Intel® Core™ i5-8500T with Intel® UHD Graphics 630 (2.1 GHz base frequency, up to 3.5 GHz with Intel® Turbo Boost Technology, 9 MB cache, 6 cores)


Intel® Q370

Form factor


Management features

HP BIOS Config Utility (download)

HP Client Catalog (download)

HP Driver Packs (download)

HP System Software Manager (download)

Update BIOS via Cloud or Network (BIOS feature)

Ivanti Management Suite

HP Management Integration Kit for Microsoft System Center Configuration Management Gen 2


Low halogen


Memory, standard

4 GB DDR4-2666 SDRAM (1 X 4 GB) (Transfer rates up to 2666 MT/s.)

Memory Slots



Internal drive bays

One 2.5" HDD

Internal drive

256 GB PCIe® NVMe™ SSD

Additional storage

1 SD media card reader

Optical drive


Display and graphics


50.8 cm (20") diagonal HD+ widescreen LCD anti-glare WLED-backlit (1600 x 900)



Intel® UHD Graphics 630


1 MP HD webcam with integrated digital microphone, maximum resolution of 1280 x 720

Expansion features



1 headphone/microphone combo

1 USB 2.0 Type-C™

2 USB 3.1 Gen 1


1 DisplayPort™ 1.2

1 power connector

1 RJ-45

2 USB 3.1 Gen 1


1 HDMI 2.0 18

Expansion slots

1 M.2 2230

1 M.2 2230/2280

(1 M.2 2230 slot for WLAN and 1 M.2 2230/2280 slot for storage.)

Media devices


Conexant CX3601 codec, 2 W internal stereo speaker, headset and headphone side port (3.5 mm), multi-streaming capable


Network interface

LANIntel® I219LM GbE

WLANIntel® Dual Band Wireless-AC 9560 802.11ac (2x2) and Bluetooth® 5 M.2, non-vPro™

Power and operating requirements

Power supply

90 W external power adapter

Operating temperature range

10 to 35°C

Operating humidity range

10 to 90% RH

Dimensions and weight

Dimensions (W x D x H)

(48.91 x 20.85 x 36.67 cm)

(With adjustable height stand.)


(5.77 kg)

(Lowest weight configuration with adjustable height stand. Weight will vary by configuration.)

Security management

Security management


Hood sensor

HP BIOSphere

HP Credential Manager

HP Password Manager

HP Power On Authentication

HP Security Manager

HP Spare Key

Intel® Identity Protection Technology (Intel® IPT)

Power-on password (via BIOS)

Removable media write/boot control

SATA port disablement (via BIOS)

Setup password (via BIOS)

Support for chassis padlocks and cable lock devices

Trusted Platform Module TPM 2.0 Embedded Security Chip (SLB9670 - Common Criteria EAL4+ Certified)

USB enable/disable (via BIOS)

Master Boot Record Security

HP Client Security Suite Gen 4

Pre-boot Authentication

Serial enable/disable (via BIOS)

What's included


Absolute Persistence module

HP Device Access Manager

HP ePrint Driver + JetAdvantage

HP Hotkey Support

HP Jumpstart

HP Noise Cancellation Software

HP PhoneWise

HP Recovery Manager

HP Secure Erase

HP Support Assistant

HP Sure Click

HP Velocity

Microsoft Defender

Native Miracast Support

HP Wireless Wakeup

Buy Office (sold separately)

HP WorkWise


USB Business Slim Standalone Wired Keyboard

Pointing device

HP USB Optical Mouse


1 year (1-1-1) limited warranty and service offering includes 1 year of parts, labor and on-site repair. Terms and conditions vary by country. Certain restrictions and exclusions apply.

No additional files, specification sheets, guides or documentation found for product.


You can finance this product via Flexirent! For more information regarding flexirent, and to use the flexirent finance calculator, please click here.

The calculator provides an indicative rental cost only. Flexirent prices quoted include GST and stamp duty. Subject to credit approval. To obtain full quote and pre-approval please contact Flexirent Customer Service on 1800 240 102. Rental is payable monthly.

Warranty: 12 Month Return To Base

Full manufacturers warranty details are available at the manufacturers (HP) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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