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| Brand | ASRock | 
|---|---|
| Model | B250M Pro4 | 
| CPU Socket Type | LGA 1151 | 
|---|---|
| CPU Type | Supports 7th and 6th Generation Intel Core i7/i5/i3/ Pentium/Celeron Processors (Socket 1151) | 
| Supported CPU Technologies | Turbo Boost Technology 2.0  * Not Compatible with Intel 8th Gen CPUs  | 
| Chipset | Intel B250 | 
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| Onboard Video Chipset | Supports Intel HD Graphics Built-in Visuals: Intel Quick Sync Video with AVC, MVC (S3D) and MPEG-2 Full HW Encode1, Intel InTru 3D, Intel Clear Video HD Technology, Intel Insider, Intel HD Graphics - Gen9 LP, DX11.3, DX12 - HWA Encode/Decode: VP8, HEVC 8b, VP9, HEVC 10b (For 7th Gen Intel CPU) - HWA Encode/Decode: VP8, HEVC 8b; GPU/SW Encode/Decode: VP9, HEVC 10b (For 6th Gen Intel CPU) - Max. shared memory 1024MB** - Three graphics output options: D-Sub, DVI-D and HDMI - Supports Triple Monitor - Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz - Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz - Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz - Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI Port (Compliant HDMI monitor is required) - Supports HDCP with DVI-D and HDMI Ports - Supports Full HD 1080p Blu-ray (BD) playback with DVI-D and HDMI Ports *Intel HD Graphics Built-in Visuals and the VGA outputs can be supported only with processors which are GPU integrated. **The size of maximum shared memory may vary from different operating systems. ***Due to chipset limitation, the Blu-ray playback of Intel HD Graphics is only supported under Windows 8 / 8 64-bit / 7 / 7 64-bit.  | 
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| Number of Memory Slots | 4x288pin (DDR4) | 
|---|---|
| Memory Standard | DDR4 2400*/ 2133 * 7th Gen Intel CPU supports DDR4 up to 2400; 6th Gen Intel CPU supports DDR4 up to 2133.  | 
| Maximum Memory Supported | 64GB Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.  | 
| Channel Supported | Dual Channel | 
| PCI Express 3.0 x16 | 2 x PCI Express 3.0 x16 Slots (PCIE1: x16 mode; PCIE3: x4 mode)* * Supports NVMe SSD as boot disks  | 
|---|---|
| PCI Express x1 | 1 x PCI Express 3.0 x1 Slot (Flexible PCIe) | 
| PCI Slots | 1 x PCI Slot | 
| Serial ATA (SATA) | 6 x SATA3 6.0Gb/s Connectors, support NCQ, AHCI and Hot Plug* * If M2_1 is occupied by a SATA-type M.2 device, SATA3_0 will be disabled.  | 
|---|---|
| M.2 | 1 x Ultra M.2 Socket (M2_1), supports type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s)** 1 x Ultra M.2 Socket (M2_2), supports type 2230/2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s)** ** If PCIE2 slot or PCI slot is occupied, the PCIe-type M.2 device on M2_1 socket will run at Gen3 x2 (16Gb/s). ** Supports Intel Optane Technology (M2_2 only) ** Supports NVMe SSD as boot disks** ** Supports ASRock U.2 Kit  | 
| Audio Chipset | Realtek ALC892 | 
|---|---|
| Audio Channels | 7.1 Channels *To configure 7.1 CH HD Audio, it is required to use an HD front panel audio module and enable the multi-channel audio feature through the audio driver.  | 
| LAN Chipset | Intel I219-V | 
|---|---|
| Max LAN Speed | 1Gbps | 
| Back I/O Ports | 1 x HDMI / 1 x USB 3.1 Gen 1 Type-C / 2 x PS/2 / 2 x USB 2.0/1.1 / 3 x USB 3.1 Gen 1 Type-A | 
|---|---|
| PS/2 | 1 x PS/2 Mouse Port 1 x PS/2 Keyboard Port  | 
| Video Ports | 1 x D-Sub Port 1 x DVI-D Port  | 
| HDMI | 1 x HDMI | 
| RJ45 | 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) | 
| USB 3.1 | 3 x USB 3.1 Gen1 Type-A Ports (Supports ESD Protection (ASRock Full Spike Protection)) 1 x USB 3.1 Gen1 Type-C Port (Supports ESD Protection (ASRock Full Spike Protection))  | 
| USB 1.1/2.0 | 2 x USB 2.0 Ports (Supports ESD Protection (ASRock Full Spike Protection)) | 
| Audio Ports | HD Audio Jacks: Line in / Front Speaker / Microphone | 
| Onboard USB | 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection (ASRock Full Spike Protection)) 1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports) (Supports ESD Protection (ASRock Full Spike Protection))  | 
|---|---|
| Other Connectors | 1 x Print Port Header 1 x COM Port Header 1 x TPM Header 1 x Chassis Intrusion and Speaker Header 2 x CPU Fan Connectors (1 x 4-pin, 1 x 3-pin)* 2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)** 1 x Front Panel Audio Connector * The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power. ** CHA_FAN1 and CHA_FAN2 can auto detect if 3-pin or 4-pin fan is in use.  | 
| Form Factor | Micro ATX | 
|---|---|
| Dimensions (W x L) | 9.6" x 9.6" | 
| Power Pin | 1 x 24-pin ATX Power Connector 1 x 8-pin 12V Power Connector  | 
| Features | Unique Feature: ASRock Super Alloy - Premium 50A Power Choke - Sapphire Black PCB - I/O Armor - High Density Glass Fabric PCB ASRock Intel 4-Layer Memory POOL (Planes on Outer Layers) Technology ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3) ASRock Full Spike Protection ASRock Live Update & APP Shop BIOS: - 128MB AMI UEFI Legal BIOS with multilingual GUI support - ACPI 6.0 Compliant wake up events - SMBIOS 2.7 Support - CPU, GT_CPU, DRAM, PCH 1.0V, VCCIO, VCCSA, VCCST Voltage Multi-adjustment Software and UEFI: Software - ASRock APP Charger - ASRock XFast LAN UEFI - ASRock EZ Mode - ASRock Full HD UEFI - ASRock My Favorites in UEFI - ASRock Instant Flash - ASRock Internet Flash - ASRock Crashless BIOS - ASRock UEFI Tech Service *These utilities can be downloaded from ASRock Live Update & APP Shop. Support CD: - Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar Hardware Monitor: - CPU/Chassis temperature sensing - CPU/Chassis Fan Tachometer - CPU/Chassis Quiet Fan (Auto adjust chassis fan speed by CPU temperature) - CPU/Chassis Fan multi-speed control - CASE OPEN detection - Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM, PCH 1.0V OS: - Microsoft Windows 10 64-bit (For 7th Gen Intel CPU) - Microsoft Windows 10 64-bit / 8.1 64-bit / 7 32-bit / 7 64-bit (For 6th Gen Intel CPU)* *To install Windows 7 OS, a modified installation disk with xHCI drivers packed into the ISO file is required. Please check our User Manual for more detailed instructions. *For the updated Windows 10 driver, please visit ASRock's website for details. Certifications: - FCC, CE - ErP/EuP ready (ErP/EuP ready power supply is required)  | 
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| Package Contents | Accessories - Quick Installation Guide, Support CD, I/O Shield - 2 x SATA Data Cables - 2 x Screws for M.2 Sockets  | 
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| First Listed on Newegg | November 12, 2024 | 
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