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HP ProDesk 400 G2.5 Small Form Factor PC Specifications

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The HP ProDesk 400 G2.5 Small Form Factor PC

Product features

Intel 8 Series (H81 Express) Chipset
Intel HD Graphics on all models* (integrated on processor)
NVIDIA NVS 310 1 GB x16 (Discrete, optional)
*HD content required to view HD images.
Adapters and cables
HP DisplayPort to DisplayPort Cable
HP DisplayPort to DVI-D Adapter
HP DisplayPort To HDMI 1.4 Adapter
HP DisplayPort to VGA Adapter
HP Serial Port Adapter
HP DisplayPort Cable
SATA Drives
  • 2 TB, 7200 RPM, SATA 6.0 Gb/s, SMART IV, 3.5-in
  • 1 TB, 7200 RPM, SATA 6.0 Gb/s, SMART IV, 3.5-in
  • 500 GB, 7200 RPM, SATA 6.0 Gb/s, SMART IV, 3.5-in
Hybrid Drives
  • 1 TB SATA 6G 2.5-in (8 GB cache) SSHD Drive
  • 500 GB SATA 6G 2.5-in (8GB cache) SSHD Drive
Solid State Drives
  • 120 GB SATA 6G 2.5-in Non-SED SSD
  • 128 GB SATA 6G 2.5-in 3D Non-SED SSD
  • 256 GB SATA 2.5-in Non-SED SSD
Self-encrypting Drive
  • 500 GB 2.5-in FIPS 140-2 Self-encrypting (SED)
Self-encrypting Solid State Drives
  • 256 GB SATA 2.5-in Opal2 Self-Encrypting (SED) Solid State Drive SSD
  • 180 GB SATA 2.5-in Opal2 Self-Encrypting (SED) Solid State Drive (Pro 2500)
  • 128 GB SATA 2.5-in Opal2 Self-Encrypting (SED) Solid State Drive
  • 120 GB SATA 2.5-in Opal2 Self-Encrypting (SED) Solid State Drive (Pro 2500)
    For hard drives and solid state drives, GB = 1 billion bytes. TB = 1 trillion bytes. Actual formatted capacity is less. Up to 16 GB (for Windows 7) and 36 GB (for Windows 8.1) of system disk is reserved for the system recovery software.
Optical Disc Drives
  • HP 9.5-mm Desktop G2 Slim DVD-ROM Drive
  • HP 9.5-mm Desktop G2 Slim SATA BDXL Blu-Ray Writer
  • HP 9.5-mm Desktop G2 Slim SuperMulti DVD Writer Drive
Media Card Reader
  • SD Media Card Reader (optional)
    Card sold separately
Form factor: Small Form Factor
Type: DDR3L-1600 (Transfer rates up to 1600 MT/s)
Maximum: 16 GB
Number of Slots: 2 UDIMM (Both slots are customer accessible/upgradeable)
  • 2,048 MB (2048 MB x 1)
  • 4,096 MB (4096 MB x 1)
  • 8,192 MB (4096 MB x 2)
  • 8,192 MB (8192 MB x 1)
  • 16,384 MB (8192 MB x 2)
For systems configured with more than 3 GB of memory and a 32-bit operating system, all memory may not be available due to system resource requirements. Addressing memory above 4 GB requires a 64-bit operating system. Memory modules support data transfer rates up to 1600 MT/s; actual data rate is determined by the system's configured processor. See processor specifications for supported memory data rate.
Ethernet (RJ-45):
  • Realtek RTL8111HSH-CG GbE Ethernet Controller (standard)
  • Intel Ethernet I210-T1 PCIe x1 Gb Network Interface Card (optional)
  • Intel N 7265 802.11ac PCIe Bluetooth (optional)
  • Intel N 7265 802.11ac PCIe No Bluetooth (optional)
  • Broadcom 802.11n PCIe Bluetooth NIC (optional)
  • Broadcom 802.11n PCIe Bluetooth NIC (optional) – Indonesia only version
  • Broadcom 802.11n PCIe No Bluetooth NIC (optional)
Wireless access point and Internet service required and not included. Availability of public wireless access points limited.
HD audio with Realtek ALC221VB
Microphone and headphone front ports (3.5 mm)
Line-out and Line-In rear Ports (3.5 mm)
Internal mono speaker (standard)
Keyboards and pointing devices
  • HP USB Conference Keyboard
  • HP USB PS/2 Washable Keyboard
  • HP USB Smart Card (CCID) Keyboard
  • HP USB Keyboard
  • HP USB Grey Keyboard
  • HP USB Grey Smart Card (CCID) Keyboard
  • HP PS/2 Keyboard
  • HP USB Value Keyboard
  • HP PS/2 mouse
  • HP USB mouse
  • HP USB 1000dpi laser mouse
  • HP Wireless Keyboard and Mouse
  • HP USB Keyboard and Optical Mouse

Power supply

Standard efficiency
  • 300W & 180W active PFC (230 VAC input only)
  • 300W & 180W Reg (115V/230 VAC)
High efficiency 80 PLUS bronze
  • 300W & 180 active PFC EStar 6
  • 82/85/82% efficient at 20/50/100% load (115 V)
  • 82/85/82% efficient at 20/50/100% load (230 V)
Rated voltage range
  • 200 - 240 VAC (300W & 180W active PFC)
  • 100 - 240 VAC (300W & 180W ENERGY STAR® 6)
  • 115 VAC/230 VAC (300W & 180W Reg)
Rated line frequency
50/60 Hz
Operating line frequency range
47 - 63 Hz
Rated input current
4A/200 VAC, 8A/100 VAC
Rated input current with energy efficient* power supply
6.3A/100 VAC
Current leakage (NFPA 99)
< 900uA / 230 VAC (300W PSU)
Current Leakage with Energy Efficient Power Supply
< 600uA / 230 VAC
Power supply fan
80 mm Fan
Power cord length
1.83 m (6.0 ft)


Hard Disk and Solid State Storage

Removable storage


High definition audio

HD stereo codec
Realtek 2-channel ALC221 codec
Audio I/O ports
Front microphone-in
Rear line-in
Rear line-out
Front headphone-out
Front microphone
All ports are 3.5 mm
Internal speaker amplifier
1.5 W amplifier for the internal speaker only. External speakers must be powered externally.
Multi-streaming capable
Playback multi-streaming can be enabled in the Realtek control panel to allow independent audio streams to be sent to/from the front and rear jacks.
8 kHz - 192 kHz
Wavetable syntheses
Yes – Uses OS soft wavetable
Analog audio
Number of channels on line-out
Stereo (left and right channels)
Internal mono speaker
External speaker jack

Input/output devices

HP Parallel Port PCIe x1 Card

Dimensions (H x L x W)
18 x 121 x 79 mm (0.22 x 4.76 x 3.11 in) with bracket
PCI Express Spec. 2.0, Single-Lane (x1)
Assigned by system
Parallel communication
Interface: IEEE 1284
Number of ports: 1 port
FIFO: 16 byte hardware
Speed: maximum 1.8 MBps
PCB connector: DB25 female
Driver support
Microsoft client: XP/Vista/7/8 (x86/x64)
Microsoft server: 2000/2003/2008/2008R2 (x86/x64)
Microsoft embedded: XP Embedded/POS Ready 2009/Embedded System 2009
Linux: Linux 2.4x/2.6x/3.x
Regulatory approvals
Hardware: CE EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, VCCI Class B, FCC Part 15 Class B, BSMI: CNS13438, C-Tick; CISPR22 AS/NZS, RoHS
Software: Microsoft WHQL Windows Microsoft Client: XP/Vista/7/8 (x86/x64) Microsoft Server” 2000/20003/2008 (x86/x64)
Operating temperature: 0° to 60° C (32° to 140° F)
Operating humidity: 5% to 95% RH
Storage temperature: -20° to 85° C (-4° to 185° F)

HP BIOSphere

Key features of the HP BIOS
Deployment and manageability - HP BIOS provides several technologies that help integrate the HP ProDesk 400 G2.5 SFF Business PC into the enterprise, such as PXE, and F10 Setup support for 12 languages
Support UEFI specification 2.3.1
Thermal and power management - The HP BIOS provides and enables thermal and power management technologies so component temperatures are managed for high reliability and to assist in operating the HP Business Desktop computer in any enterprise environment
Thermal Controlled Fans – Automatic or manual controlled fan speeds for cooling and acoustic performance Serviceability - HP BIOS provides diagnostic and detailed service information
Upgrades and recovery - HP BIOS provides numerous ways to upgrade HP Business Desktop computers, including BIOS updates from within DOS (DOSFlash), BIOS updates from within Windows (HPQFlash), HP Client Manager, and fail-safe recovery (Emergency Boot Block Recovery). In addition, the HP Business Desktop BIOS Utilities tool enables replicated BIOS setup throughout the Enterprise; it is available from within the BIOS F10 setup and from the support website
HP BIOS uses PKI signing of the BIOS for trusted BIOS upgrades and recovery
Serviceability - HP BIOS provides diagnostic and detailed service information
Additional HP BIOS features
Power-on password - Helps prevent an unauthorized user from powering on the system
Administrator password - Also known as the setup password, this helps prevent unauthorized changes to the system configuration. If the administrator password is not known, the BIOS version cannot be changed and changes cannot be made to BIOS settings using F10 setup or under the OS
Advanced Configuration and Power Interface (ACPI) - Represents a significant innovation in power and configuration management, allowing operating systems and applications to manage power based on activity and usage. HP Pro models use ACPI to provide power conservation features
S5 max power savings setting - supports EU Lot6 requirement and allows the computer to power down below 1W is S5 (when turned off). When S5 Max Power Savings feature is enabled power to slots is turned off along with WOL functionality
Master boot record security - Helps to prevent changes and/or infections to the Master Boot Record caused by viruses or malicious code
HP BIOS protection – Prevents unauthorized updates or changes to the BIOS due to malware, viruses, or malicious BIOS updates. Based on NIST SP800-147 policy guidelines

Physical specifications

Chassis (W x H x D)
270 x 95 x 317.85 mm (10.63 x 3.74 x 12.51 in)
System volume
7.68 L
7.31 L (not including bezel)
System weight
4.5 kg (9.92 lb)
Max supported weight (desktop orientation)
4.4 kg
Tower stand (H x W x D)
27.29 x 151.75 x 190 mm (1.15x 5.97 x 7.48 in)
Packaged (H x W x D)
440 x 210 x 520 mm (17.32 x 8.27 x 20.47 in)
Shipping weight
7.07 kg (15.58 lb)
Palletization profile
Sea: 10 units per layer, 4 layers max, 40 units per pallet
Air: 10 units per layer, 2 layers max, 20 units per pallet
HP Cloud Recovery download tool (Cloud Recovery Client) is available under Software and Drivers section on the support page.