Model

Brand

ASRock

Series

Fatal1ty

Model

X370 Gaming K4

Supported CPU

CPU Socket Type

AM4

CPU Type

A-Series / Ryzen Series

Chipsets

Chipset

AMD Promontory X370

Memory

Number of Memory Slots

4×288pin

Memory Standard

DDR4 2667/ 2400/ 2133*
* Please refer to Memory Support Table on ASRock's website for more information.

Maximum Memory Supported

64GB

Channel Supported

Dual Channel

Expansion Slots

PCI Express 3.0 x16

2 x PCI Express 3.0 x16 Slots (PCIE2: x16 mode; PCIE4: x8 mode)*
* Supports NVMe SSD as boot disks.
* PCIE2 will downgrade to x8 mode when A-Series APU is installed.
* PCIE4 will be disabled when A-Series APU is installed.

PCI Express x1

4 x PCI Express 2.0 x1 Slots

Other Slots

1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
15µ Gold Contact in VGA PCIe Slot (PCIE2)
* Supported with A-Series APUs only.

Storage Devices

SATA 6Gb/s

6 x SATA3 6.0Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug

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) (with Ryzen Series CPU) or Gen3 x2 (16Gb/s) (with A-Series APU)*
1 x M.2 Socket (M2_2), supports type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen2 x2 (10Gb/s)*
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit

SATA RAID

0/1/10

Onboard Video

Onboard Video Chipset

Integrated AMD Radeon R7/R5 Series Graphics in A-series APU
DirectX 12, Pixel Shader 5.0
Max. shared memory 2GB
Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
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 HDMI Port 
Supports Full HD 1080p Blu-ray (BD) playback with HDMI Port

Onboard Audio

Audio Chipset

Realtek ALC1220

Audio Channels

7.1 Channels

Onboard LAN

LAN Chipset

Intel i211AT

Max LAN Speed

10/100/1000Mbps

Rear Panel Ports

PS/2

1 x PS/2 Mouse Port
1 x PS/2 Keyboard Port

HDMI

1 x HDMI

RJ45

1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)

USB 3.1

1 x USB 3.1 Type-A Port (10Gb/s) (Supports ESD Protection)
1 x USB 3.1 Type-C Port (10Gb/s) (Supports ESD Protection)

USB 3.0

6 x USB 3.0 Ports (Supports ESD Protection)
* 1 x Fatal1ty Mouse Port (USB 3.0) is included

S/PDIF Out

1 x Optical

Audio Ports

HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)

Internal I/O Connectors

Onboard USB

2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
2 x USB 3.0 Headers (Support 4 USB 3.0 ports) (Supports ESD Protection)

Other Connectors

1 x COM Port Header
1 x TPM Header
1 x Power LED and Speaker Header
1 x AMD Fan LED Header
2 x RGB LED Headers
* Supports up to 12V/3A, 36W LED Strip
1 x CPU Fan Connector (4-pin) 
* The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power. 
1 x CPU Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control) 
* The CPU Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power. 
2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)  
1 x Chassis Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control) 
* The Chassis Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power. 
* CPU_OPT/W_PUMP, CHA_FAN2 and CHA_FAN3/W_PUMP can auto detect if 3-pin or 4-pin fan is in use.
1 x 24-pin ATX Power Connector (Hi-Density Power Connector)
1 x 8-pin 12V Power Connector (Hi-Density Power Connector)
1 x Front Panel Audio Connector 
1 x AMD LED Fan USB Header 
1 x Dr. Debug with LED

Physical Spec

Form Factor

ATX

Dimensions (W x L)

12.0" x 9.6"

Power Pin

24 Pin

Features

Features

Unique Feature
ASRock USB 3.1
- ASRock USB 3.1 Type-A Port (10Gb/s)
- ASRock USB 3.1 Type-C Port (10Gb/s)
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink 
- Premium 45A Power Choke 
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors) 
- I/O Armor
- Matte Black PCB
- High Density Glass Fabric PCB
- 2oz Copper PCB 
ASRock Steel Slots
ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

Gaming Armor
Power
- Hi-Density Power Connectors (24 pin and 8 pin) Memory
- 15µ Gold Contact in DIMM Slots VGA Card
- 15µ Gold Contact in VGA PCIe Slot (PCIE2)
Internet
- Intel LAN Cooling
- XXL Aluminum Alloy Heatsink
Audio
- Creative SoundBlaster Cinema3

BIOS Feature
- 128MB AMI UEFI Legal BIOS with GUI support
- Supports "Plug and Play"
- ACPI 5.1 compliance wake up events
- Supports jumperfree
- SMBIOS 2.3 support
- CPU, VCORE_NB, DRAM, VPPM, PCH 1.05V, +1.8V, VDDP, PROM 2.5V, Voltage Multi-adjustment

Support CD
- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar

Hardware Monitor
- Temperature Sensing: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Fan Tachometer: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Fan Multi-Speed Control: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, VCORE_NB, DRAM, PCH 1.05V, +1.8V, VDDP

OS
- Microsoft Windows 10 64-bit
* For the updated Windows 10 driver, please visit ASRock's website for details

Certifications
- FCC, CE, WHQL
- ErP/EuP ready (ErP/EuP ready power supply is required)

Packaging

Package Contents

Accessories
- Quick Installation Guide, Support CD, I/O Shield
- 4 x SATA Data Cables
- 1 x ASRock SLI_HB_Bridge_2S Card
- 3 x Screws for M.2 Sockets