Easy to deploy, sleek, and feature-rich, the HP ProOne 400 20" All-in-One PC with business-class collaboration, optional touch, manageability, and security features is a sound investment.
Specifications
General 
Type: Personal computer

Product Form Factor: All-in-one - with height-adjustable stand

Embedded Security: Trusted Platform Module (TPM 2.0) Security Chip

Localization: English / United States
Processor / Chipset 
CPU: Intel Pentium G4560T / 2.9 GHz

Number of Cores: Dual-Core

CPU Qty: 1

Max CPU Qty: 1

CPU Upgradability: Upgradable

Processor Main Features: Hyper-Threading Technology, Intel Smart Cache

Chipset Type: Intel H270
Cache Memory 
Installed Size: 3 MB

Cache Per Processor: 3 MB
RAM 
Installed Size: 4 GB / 32 GB (max)

Technology: DDR4 SDRAM - non-ECC

Effective Memory Speed: 2400 MHz

Rated Memory Speed: 2400 MHz

Memory Specification Compliance: PC4-19200

Form Factor: SO-DIMM 260-pin

Features: Unbuffered

Configuration Features: 1 x 4 GB
Hard Drive 
Type: HDD

Capacity: 1 x 500 GB

Interface Type: SATA 6Gb/s

Spindle Speed: 7200 rpm
Storage Controller 
Type: 1 x SATA

Controller Interface Type: SATA 6Gb/s
Optical Storage 
Type: DVD-Writer - SATA
Card Reader 
Type: Card reader

Supported Flash Memory Cards: SD Memory Card, SDHC Memory Card, SDXC Memory Card
Monitor 
Monitor Type: LED - TN

Diagonal Size: 20"

Native Resolution: 1600 x 900 (HD+)

Widescreen Display: Yes

Image Aspect Ratio: 16:9

Horizontal Viewing Angle: 170

Vertical Viewing Angle: 160

Pixel Pitch: 0.276 mm

Image Brightness: 225 cd/m²

Image Contrast Ratio: 1000:1

Monitor Features: HD+ anti-glare
Graphics Controller 
Graphics Processor: Intel HD Graphics 610 Dynamic Video Memory Technology

Video Interfaces: DisplayPort
Audio Output 
Sound Output Mode: Stereo

Max Sampling Rate: 192 kHz

Compliant Standards: High Definition Audio, DTS Studio Sound

Speakers Included: 2 x right / left channel
Camera 
Camera: Yes

Resolution (MP): 1 Megapixel

Resolution: 1280 x 720
Input Device 
Type: Mouse, keyboard
Keyboard 
Keyboard Name: HP Business Slim Keyboard

Interface: USB

Localization & Layout: US
Mouse 
Technology: Optical

Interface: USB
Audio Input 
Type: Two microphones
Networking 
Ethernet Controller: Realtek RTL8111HSH-CG

Wireless LAN Supported: Yes

Wireless NIC: Intel Dual Band Wireless-AC 7265

Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, Bluetooth 4.2

Features: Dual stream (2x2)

Compliant Standards: IEEE 802.3, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, Bluetooth 4.2
Expansion / Connectivity 
Bays: 1 (total) / 0 (free) x external 5.25" Slim Line ¦ 1 (total) / 1 (free) x external ¦ 1 (total) / 0 (free) x internal 2.5"

Slots: 1 (total) / 0 (free) x CPU ¦ 2 (total) / 1 (free) x SO-DIMM 260-pin ¦ 1 (total) / 0 (free) x M.2 Card - 2230 ¦ 1 (total) / 1 (free) x M.2 Card - 2280/2230

Interfaces: 3 x USB 3.1 ¦ 2 x USB 2.0 (2 rear) ¦ 1 x DisplayPort ¦ 1 x headphones ¦ 1 x microphone ¦ 1 x audio line-out ¦ 1 x LAN (Gigabit Ethernet) - RJ-45 ¦ 1 x USB 3.1 (fast-charging)
Miscellaneous 
Theft/Intrusion Protection: Security lock slot (cable lock sold separately)

Security Slot Type: Kensington security slot

Compliant Standards: Common Criteria EAL4+, low halogen

Pricing Type: Promo
Power 
Device Type: Power adapter

Nominal Voltage: AC 120/230 V (50/60 Hz)

Power Provided: 90 Watt

Efficiency: 89%

Power Factor Correction: Yes (active)
Operating System / Software 
OS Provided: Windows 10 Pro 64-bit Edition English

Software: HP SoftPaq Download Manager, HP Client Catalog, HP BIOS Config Utility, HP System Software Manager, HP MIK for Microsoft SCCM (free download)
Environmental Standards 
ENERGY STAR Certified: Yes
Manufacturer Warranty 
Service & Support: Limited warranty - parts and labor - 3 years - on-site
Dimensions & Weight 
Dimensions & Weight Details: 19.6 in - 2.3 in - 13.7 in - 12.1 lbs - without stand

Width: 19.6 in

Depth: 2.3 in

Height: 13.7 in

Weight: 12.15 lbs
Environmental Parameters 
Min Operating Temperature: 50 °F

Max Operating Temperature: 95 °F

Humidity Range Operating: 10 - 90% (non-condensing)