Shipping Estimate
USA
- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
ASRock B550M Pro4 AMD AM4 Socket Motherboard, Micro-ATX, 4x DDR4 Slots, 2x M.2 Sockets, GbE LAN, 1x D-Sub / 1x DisplayPort / 1x HDMI PortSupports 3rd Gen AMD AM4 Ryzen Future AMD Ryzen Processors 8 Power Phase Design, Digi Power Supports DDR4 4733+ (OC) 1 PCIe 4. 0 x16, 1 PCIe 3. 0 x16, 1 PCIe 3. 0 x1, 1 M. 2 Key E for WiFi Graphics Output Options: HDMI, DisplayPort, D Sub AMD CrossFireX 7. 1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio 6 SATA3, 1 Hyper M. 2 (PCIe Gen4 x4), 1 M. 2 (PCIe Gen3 x2 & SATA3) 2 USB 3. 2 Gen2 (Rear Type A+C), 8 USB 3. 2 Gen1 (4 Front, 4 Rear)
Supports 3rd Gen AMD AM4 Ryzen / Future AMD Ryzen Processors8 Power Phase Design, Digi Power
Supports DDR4 4733+ (OC)
1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
Graphics Output Options: HDMI, DisplayPort, D-Sub
AMD CrossFireX
7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
Realtek Gigabit LAN
Nahimic Audio
Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant and rich with details.
8 Power Phase Design
Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.
Premium 50A Power Choke
Compared to traditional chokes, ASRock’s premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.
2oz Copper PCB
2 ounce copper inner layers that provide stable signal traces and power shapes! Delivering lower temperature and higher energy efficiency for overclocking, it's able to support the latest DDR4 memory modules with most extreme memory performance!
Specifications
Unique Feature
ASRock USB 3.2 Gen2
- ASRock USB 3.2 Gen2 Type-A Port (10 Gb/s)
- ASRock USB 3.2 Gen2 Type-C Port (10 Gb/s)
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 50A Power Choke
- Sapphire Black PCB
- High Density Glass Fabric PCB
- 2oz Copper PCB
ASRock Steel Slot Gen4
ASRock Full Coverage M.2 Heatsink
ASRock Hyper M.2 (PCIe Gen4x4)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop
CPU
Supports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors
Digi Power design
8 Power Phase design
Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G.
Chipset
AMD B550
Memory
Dual Channel DDR4 Memory Technology
4 x DDR4 DIMM Slots
AMD Ryzen series CPUs (Matisse) support DDR4 4533+(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory
AMD Ryzen series APUs support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory
Max. capacity of system memory: 128GB
Supports Extreme Memory Profile (MP) memory modules
15µ Gold Contact in DIMM Slots
BIOS
256Mb 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, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, 2.5V_PROM, +1.8VSB, VDDP Voltage Multi-adjustment
Graphics
Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU
DirectX 12, Pixel Shader 5.0
Shared memory default 2GB. Max Shared memory supports up to 16GB.
Three graphics output options: D-Sub, HDMI and DisplayPort 1.4
Supports Triple Monitor
Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
Supports DisplayPort 1.4 with max. resolution up to 5K (5120x2880)@120Hz
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 2.1 Port (Compliant HDMI monitor is required)
Supports HDR (High Dynamic Range) with HDMI 2.1
Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports
Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports
Supports Microsoft PlayReady
Audio
7.1 CH HD Audio with Content Protection (Realtek ALC1200 Audio Codec)
Premium Blu-ray Audio support
Supports Surge Protection
PCB Isolate Shielding
Individual PCB Layers for R/L Audio Channel
Nahimic Audio
LAN
PCIE x1 Gigabit LAN 10/100/1000 Mb/s
Realtek RTL8111H
Supports Wake-On-LAN
Supports Lightning/ESD Protection
Supports Energy Efficient Ethernet 802.3az
Supports PXE
Slots
AMD Ryzen series CPUs (Matisse)
- 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)
AMD Ryzen series APUs
- 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)
1 x PCI Express 3.0 x1 Slot
Supports AMD Quad CrossFireX and CrossFireX
1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
Storage
6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s)
1 x M.2 Socket (M2_2), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)
Connector
1 x COM Port Header
1 x SPI TPM Header
1 x Power LED and Speaker Header
2 x RGB LED Headers
2 x Addressable LED Headers
1 x CPU Fan Connector (4-pin)
1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector
1 x Front Panel Audio Connector
2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection)
Rear Panel I/O
Antenna Bracket
1 x PS/2 Mouse/Keyboard Port
1 x D-Sub Port
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection)
4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)
2 x USB 2.0 Ports (Supports ESD Protection)
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
HD Audio Jacks: Line in / Front Speaker / Microphone
Software and UEFI
Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock XFast LAN
UEFI
- ASRock Full HD UEFI
- ASRock Instant Flash
Support CD
Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
Accessories
Quick Installation Guide, Support CD, I/O Shield
2 x SATA Data Cables
2 x Screws for M.2 Sockets
Hardware Monitor
Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans
Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, +1.8V, VDDP
Form Factor
Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm
Solid Capacitor design
2oz Copper PCB
OS
Microsoft Windows 10 64-bit
Certifications
FCC, CE
ErP/EuP ready (ErP/EuP ready power supply is required)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 169 reviews
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Product Reviews
★★★★★ 5
Best for little kids! Light mist and fragrance!
Size: 5.5 Ounce (Pack of 1)
Works great ! Not harsh spray, it’s a fine mist. Lightweight for children .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Reliable Spray for Hard-to-Reach Spots and Reapplication
Size: 5.5 Ounce (Pack of 1)
I picked up this spray specifically to cover the spots I can’t reach with lotion (my back), and it’s been super handy. The spray applies evenly, and while it has a familiar sunscreen scent, it fades quickly. I’ve worked it into my routine for touch-ups, especially on homeward-bound afternoon bike commutes. I keep the can in my bike bag and give everything a quick respray before heading home.
It holds up well during activity and gives me solid protection for about two hours, after which I reapply. One thing to note: it does leave a bit of a shiny finish, which is fine for arms and legs, but I skip it on my face during the day because I don’t love the reflective look. That said, if it’s late or I’m not worried about how shiny my face is, it does the job. The SPF 100 is a plus for extended sun exposure, and I like knowing that I’ve got extra coverage when I need it.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
good protection
Size: 5.5 Ounce (Pack of 1)
it works well as long as you let it dry. i’d not it gets sticky and gross and then peels off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2024
★★★★★ 5
Protected my kids through 7 hours of sun and water—no burns at all!
Size: 5.5 Ounce (Pack of 1)
This sunscreen is the real deal. We spent a full day, about 6 to 7 hours, at a water park under the blazing sun. My kids were running around nonstop, in and out of the water, and we reapplied every 30-45 minutes.
Not a single sunburn. Their skin looked exactly the same by the end of the day, no redness, no irritation. Meanwhile, I skipped sunscreen and got absolutely fried. Lesson learned.
Goes on smoothly, doesn’t leave a sticky residue, and held up amazingly even with water play. I’ll be buying this on repeat all summer.
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Reviewed in the United States on July 18, 2025
★★★★★ 4
Smells great. Tough to remove.
Size: 5.5 Ounce (Pack of 1)
The smell is great and very nostalgic, but it has a sticky/tacky feel on the skin. It's hard to get off even with a lot of scrubbing with soap and hot water. They weren't joking that it stays on through water and sweat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 25, 2024