HP ProDesk 400 G3 Desktop Mini PC

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Redesigned and future ready

Designed to fit the modern workspace with an updated stylish appearance, the ultra-small HP ProDesk 400 Desktop Mini is an affordable PC with reliability and performance for your growing business.
Designed to fit the modern workspace with a new stylish appearance, the HP ProDesk 400 Desktop Mini provides a reliable and affordable PC for your growing business.
Powerful options

Power through your day with high-performance 7th Gen Intel® Core™ i3/i5/i7processors2, optional Intel® Optane™ memory and SSDs3, and up to 32 GB of DDR4 memory

Simple mounting solutions

Create the right solution for your workplace with mounting options for your HP ProDesk Mini. Secure and innovative options enable mounting behind compatible monitors3, under desks, or virtually anywhere.

HP exclusive security and manageability

Help prevent data breaches and downtime with HP BIOSphere Gen34 and simplify management with HP WorkWise5, an advanced smartphone app for PC management.


Processor family
6th Generation Intel® Core™ i3 processor; 7th Generation Intel® Core™ i3 processor; 6th Generation Intel® Core™ i5 processor; 7th Generation Intel® Core™ i5 processor; 6th Generation Intel® Core™ i7 processor; 7th Generation Intel® Core™ i7 processor

MDA key selling point
Windows 10 Pro or other operating systems available

Intel® H270

Form factor

Security management
Trusted Platform Module TPM 2.0 Embedded Security Chip (SLB9670 - Common Criteria EAL4+ Certified); SATA 0,1 port disablement (via BIOS); Drive lock; Serial, USB enable/disable (via BIOS); Power-on password (via BIOS); Setup password (via BIOS); Solenoid hood lock/intrusion sensor; Support for chassis padlocks and cable lock devices

Memory Slots

Internal drive bays
One 2.5"


Intel® HD Graphics 530; Intel® HD Graphics 630; Intel® HD Graphics 610

I/O Port location
1 USB 3.1 Gen 1; 1 USB 3.1 Gen 1 (charging); 1 Headphone connector; Universal audio jack with CTIA headset support
I/O Port location
1 security lock slot; 1 external antenna connector; 1 DisplayPort™; 1 serial; 2 USB 3.1 Gen 1; 2 USB 2.0; 1 RJ-45; 1 power connector

Expansion slots
1 M.2 2280 for optional wireless NIC; 1 internal M.2 SSD storage (2230 or 2280 connector)

Conexant CX20632 codec with universal audio jack and 2W internal speaker, headset and headphone front ports (3.5 mm), multi-streaming capable

HP Conferencing Keyboard; HP USB PS/2 Washable Keyboard; HP USB Smart Card (CCID) Keyboard; HP USB Business Slim Keyboard (China only); HP USB Grey Keyboard

Network interface
Realtek RTL8111 HSH GbE LOM network connection

65 W 89% efficient

Energy efficiency
ENERGY STAR® certified and EPEAT® registered configurations available

Dimensions (W x D x H)
17.7 x 3.42 x 17.47 cm

1.21 kg

HP BIOSphere

On-site Limited warranty: Three-year (3-3-3) limited warranty delivers three years of on-site, next business-day service for parts and labor and includes free telephone support 24 x 7. Three-year onsite and labor are not available in all countries. Service offers terms up to 5 years by choosing a Care Pack. To choose the right level of service for your HP product, visit HP Care Pack Central: www.hp.com/go/cpc