Expansion bays and slots The HP Pro SFF 400 has an m.2 slot for WLAN and one for storage, one PCIe x16 slot, and one PCIe x1 slot. Connect up to 3 displays Increase productivity and tackle a range of workflows with video ports supporting up to three displays. Protected by HP Wolf Security HP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense. BIOS management over the network HP Sure Admin, a modern BIOS management tool, eliminates the need for a password or BIOS configuration utility in the OS by creating a digital signature that allows IT administrators to securely manage BIOS settings over a network. Browse confidently Help protect your PC from websites and read only Microsoft Office and PDF attachments with embedded malware, ransomware, or viruses with hardware-enforced security from HP Sure Click. Automatic recovery from firmware attacks Firmware attacks can completely devastate your PC. Stay protected with HP’s self-healing BIOS - HP Sure Start Gen7 automatically recovers the BIOS from malware, rootkits, or corruption. HP Sure Sense Malware is evolving rapidly and traditional antivirus can’t always recognize new attacks. Protect your PC against never-before-seen attacks with HP Sure Sense, which uses deep learning AI to provide exceptional protection against advanced malware.Erase your driveHP Secure Erase removes the contents of a hard drive for repurposing or reassignment. Simple PC management Spend less time and get right to the updates you need with HP Support Assistant. ProcessorIntel® Core™ i5 13500Memory8 GB DDR4 Operating SystemFreeDOSDimensions27 x 9.5 x 30.8 cm GraphicsIntel® UHD Graphics 770 Operating system FreeDOS Memory 8 GB DDR4-3200 MHz RAM (1 x 8 GB) Standard memory note Transfer rates up to 3200 MT/s. Internal Storage 512 GB PCIe® NVMe™ SSD Storage typeSSD Internal drive baysOne 3.5" HDD Processor Intel® Core™ i5-13500 (up to 4.8 GHz with Intel® Turbo Boost Technology, 24 MB L3 cache, 14 cores, 20 threads)7,8 Processor family 13th Generation Intel® Core™ i5 processor Chipset Intel® Q6709 Weight 4.2 kg10 Graphics Integrated Graphics (integrated) Intel® UHD Graphics 770 Power240 W internal power supply, up to 92% efficiency, active PFC Minimum dimensions (W x D x H) 27 x 9.5 x 30.8 cm Form factorSmall form factor KeyboardHP Wired Desktop 320K Keyboard Pointing deviceHP 125 Wired Mouse AudioRealtek ALC3252 codec, universal audio jack with CTIA and OMTP headset support Expansion slots1 M.2 22301 M.2 22801 PCIe 3 x11 PCIe 4 x1611,12 I/O Port locationFrontRear Ports1 headphone/microphone combo1 SuperSpeed USB Type-C® 10Gbps signaling rate3 SuperSpeed USB Type-A 10Gbps signaling rate1 audio-out1 power connector1 RJ-451 HDMI 1.43 SuperSpeed USB Type-A 5Gbps signaling rate1 DisplayPort™ 1.42 USB Type-A 480Mbps signaling rate1 VGA Security managementTrusted Platform Module TPM 2.0 Embedded Security Chip shipped with Windows 10 (Common Criteria EAL4+ Certified)(FIPS 140-2 Level 2 Certified)HP Secure EraseHP Sure ClickAbsolute Persistence moduleHP Sure AdminHP Tamper LockHP Sure Start Gen7HP Sure Sense213,14,15,16,17,18,19,20 Software included HP NotificationsHP PC Hardware Diagnostics UEFIHP Support AssistantHP Connection OptimizerHP Privacy SettingsHP PC Hardware Diagnostics WindowsHP Desktop Support UtilitiesHP Easy CleanTouchpoint Customizer for CommercialHP Easy Clean Keyboard DriverHSA Fusion for CommercialHSA Telemetry for CommercialHPX for CMIT Available softwareHP Smart Support Management featuresHP Client Catalog (download)HP Driver Packs (download)HP Image Assistant (download)HP Client Management Script Library (download)HP Manageability Integration Kit Gen 4 (download)