ASRock AMD AM4 Ryzen X370 Gaming K4 ATX Motherboard

ASRock X370 Gaming K4, AMD X370, S AM4, DDR4, SATA3, M.2 (PCIe/SATA), 2-Way SLi/CrossFire, Intel GbE, USB 3.1 A+C, ATX

Scan code: LN79068 Manufacturer code: 90-MXB550-A0UAYZ Request call
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AM4 Socket ASROCK X370. ATX Gaming K4 Fatal1ty Motherboard

AM4 Asrock Motherboard
X370 Gaming Gear From ASROCK Fatal1ty Series

This ASROCK motherboard supports the use of the A-Series APUs (Bristol Ridge) and Ryzen CPUs (Summit Ridge) which are both AMD socket AM4. It also boasts both Type-A and Type-C connections to ensure fast transfer speeds. The many impressive features that build up the GAMING K4 board entail audio enhancements, graphic output, reliability and protective technologies, a next-gen motherboard to push your PC onward.

AMD X370

CPU Socket

Form Factor

Stylish LED Lighting

AM4 Asrock Motherboard Feature
match the X370 Gaming K4 with your PC

Build your own colourful lighting system! ASRock RGB LED allows users to connect LED strip and create their unique PC style easily.

Sound Blaster Cinema 3

AM4 Asrock Motherboard Feature
Immersive audio built-in to the ATX K4

A new world of cinematic audio that delivers unprecedented levels of audio realism, dynamics and punch to gaming sound. 7.1 CH HD audio with Realtek ALC1220 audio codec that brings a truly immersive audio experience up to 120dB SNR.

Intel LAN Port

AM4 Asrock Motherboard Feature
Boosted LAN power from Intel

Better performance, lowered CPU utilization and enhanced stability all come with the power of Intel LAN, get more from your ports!

PCI-E Protected Slots

AM4 Asrock Motherboard Feature
Steel slots for reinforced safety

The advanced PCI-E Steel Slots packed with solid cover that prevent any signal interference with graphics cards. It also ensures the heavy graphics cards to be well-installed in the PCI-E slots safely.

M.2 Slot Speeds

AM4 Asrock Motherboard Feature
Rapid M.2 on-board connections for ssd

One PCIe Gen3 x4 Ultra M.2 interface that pushes data transfer speeds up to 32Gb/s, and is compatible with ASRock’s U.2 Kit for installing some of the world’s fastest U.2 PCIe Gen3 x4 SSD. The other one supports PCIe Gen2 x2 10Gb/s transfer speed. Both of them support SATA3 6Gb/s M.2 modules.

Wifi Availability

AM4 Asrock Motherboard Feature
Killer SLI M.2 (KEY E) For WiFi

Besides the on-board LAN port, users may also choose 802.11ac wireless connections by M.2 (Key E) slot.
*WiFi module is not included.

Super Alloy Gaming

AM4 Asrock Motherboard Feature
Motherboard Tech that's Stable & Reliable

CPU Power: Hi-Density Power Connectors (24 pin and 8 pin). / Memory: 15u Gold Contact in DIMM Slots / VGA Card: 15u Gold Contact in VGA PCIe Slot (PCIE2) / Internet: Intel LAN / Cooling: XXL Aluminium Alloy Heatsink, Heat Pipe Design / Audio: Creative SoundBlaster Cinema3

Copper Cooling Layers

AM4 Asrock Motherboard Feature
Lower-Temperature, High-Energy Efficiency for OC

It comes with 2 ounces copper inner layers, using only carefully selected copper materials for PCB layers, delivering lower temperature and higher energy efficiency for overclocking.

GAMING K4 Optimization

AM4 Asrock Motherboard Feature
IR Digital PWM Technology

The onboard IR Digital PWM controller delivers the most precise and stable power so that users may achieve optimal performance.

Advanced Gaming Techniques

AM4 Asrock Motherboard Feature
Level up your in-game skill with Key Master

Key Master consists of two major features, Sniper Key and Macro Key. It enhances your mouse and keyboard with customizable macros, sniper modes, key repeat rates and repeat delay.

Other X370 K4 Features

AM4 Asrock Motherboard Feature
Get more from your motherboard

Above: Water Pump Header / Gold Audio Jacks / Fatal1ty Mouse Port / Dual USB 3.1 (Type-A + Type-C)

Other: AMD Quad CrossFireX / NVIDIA Quad SLI / Supports DDR4 2667 / Premium 45A Power Choke / Nichicon 12K Black Caps / Matte Black PCB / High Density Glass Fabric PCB / 8+4 Power Phase Design / Fatal1ty Mouse Port / I/O Armour

Core Specifications
Form Factor ATX
CPU Socket AM4
Chipset AMD X370
RAM Memory Support
Memory Type DDR4
Memory Channel Dual (2)
Memory Type (ECC) Non-ECC
Memory Type (R/U) UDIMM (Unbuffered)
Memory Speed (Mhz)
  • DDR4 - 2133
  • DDR4 - 2400
  • DDR4 - 2666
Max. Memory Capacity 64GB (4x16GB)
Audio Realtek ALC1220 7.1 HD Audio
Graphics Support
Primary GPU Interface PCIe 3.0 (x16)
SLI Support 2-Way SLi
Crossfire Support 2-Way CrossFire
On-Board Graphics Connectors HDMI
Internal Connectivity
Expansion Slots
  • 1 x M.2 Key E (Supports Wi-Fi modules)
  • 2 x M.2, 2230/2242/2260/2280, PCIe/SATA
  • 4 x PCIe 2.0 x1
  • 1 x PCIe 3.0 x16
  • 1 x PCIe 3.0 x16 (x8 Bandwidth)
SATA Support SATA3 / M.2
RAID Support via SATA
Storage Mode Support
  • AHCI
  • Hot Plug
  • NCQ
  • NVMe Boot (via M.2 PCIe Slot)
  • NVMe Boot (via PCIe 3.0 Slot)
  • RAID 0 (SATA 0~5 ONLY)
  • RAID 1 (SATA 0~5 ONLY)
  • RAID 10 (SATA 0~5 ONLY)
Internal I/O
  • 1 x 24-pin (Power)
  • 1 x 4-pin CPU Fan Connector
  • 1 x 4-pin CPU OPT Fan Connector
  • 2 x 4-pin System Fan Connector
  • 1 x 4-pin Water Pump Connector
  • 1 x 8-pin (Power)
  • 1 x AMD Fan LED Header
  • 1 x AMD LED Fan USB Header
  • 1 x Dr. Debug with LED
  • 1 x Front Panel Audio Header
  • 1 x Power LED / Speaker Header
  • 2 x RGB LED connector
  • 6 x SATA III - 6Gb/s
  • 1 x Serial (COM) Header
  • 1 x TPM Header
  • 2 x USB 2.0 Header
  • 2 x USB 3.0 Header
External Connectivity
Network Interface Type Wired Gigabit LAN (10/100/1000)
Network Chip/Modules 1 x Intel® I211AT (Gigabit LAN)
Rear I/O Connectors
  • 1 x 10/100/1000 (LAN)
  • 1 x Center/Subwoofer Speaker Out
  • 1 x Fatal1ty Mouse Port (USB 3.0)
  • 1 x Front Speaker Out
  • 1 x HDMI
  • 1 x Line In
  • 1 x Mic-In
  • 1 x PS/2 Keyboard
  • 1 x PS/2 Mouse
  • 1 x Rear Speaker Out
  • 1 x SPDIF Out (Optical)
  • 5 x USB 3.0
  • 1 x USB 3.1 Type-A
  • 1 x USB 3.1 Type-C
  • 2 x Wi-Fi antenna connector holes
Other Motherboard Specifications
Water Cooled No
QPI Speed N/A
Board Dimensions  

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

24 months
Return to base
DOA Period:
28 days
RTB Period:
24 months
Manufacturer Contact Details
0871 472 4747
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ASRock AMD AM4 Ryzen X370 Gaming K4 ATX Motherboard
ASRock AMD AM4 Ryzen X370 Gaming K4 ATX Motherboard