Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
ASRock Motherboard B550 PHANTOM GAMING 4 AMD AM4 Ryzen B550 DDR4 128GB PCI Express/SATA ATX RetailGaming Armor Memory 15micro Gold Contact in DIMM Slots Cooling XXL Aluminum Alloy Heatsink Audio Nahimic Audio Unique Feature 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 Hyper M. 2 (PCIe Gen4x4) ASRock POST Status Checker (PSC) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update and APP Shop CPU Supports
Gaming ArmorMemory
- 15micro Gold Contact in DIMM Slots
Cooling
- XXL Aluminum Alloy Heatsink
Audio
- Nahimic Audio
Unique Feature
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 Hyper M.2 (PCIe Gen4x4)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update and APP Shop
CPU
- Supports 3rd Gen AMD AM4 RyzenTM / future AMD RyzenTM Processors
- Digi Power design
- 8 Power Phase design
Not compatible with AMD RyzenTM 5 3400G and RyzenTM 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 and 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 and non-ECC, un-buffered memory
- Max. capacity of system memory: 128GB
- Supports Extreme Memory Profile (XMP) memory modules
- 15micro Gold Contact in DIMM Slots
For Ryzen Series CPUs (Picasso), ECC is only supported with PRO CPUs.
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.
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.
- Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) at 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 Port
- Supports 4K Ultra HD (UHD) playback with HDMI 2.1 Port
- Supports Microsoft PlayReady
Actual support may vary by CPU
The Max shared memory 16GB requires 32GB system memory installed.
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)
- 2 x PCI Express 3.0 x1 Slots
- Supports AMD Quad CrossFireXTM and CrossFireXTM
- 1 x M.2 Socket (Key E) with the bundled WiFi-802.11ac module
Supports NVMe SSD as boot disks
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 2260/2280/22110 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s)
- 1 x M.2 Socket (M2_3), supports M Key type 2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)
M2_3 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled.
Supports NVMe SSD as boot disks
Supports ASRock U.2 Kit
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 4 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)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
Support in total up to 12V/3A, 36W LED Strip
Support in total up to 5V/3A, 15W LED Strip
The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin fan is in use.
Rear Panel I/O
- 2 x Antenna Ports
- 1 x PS/2 Mouse/Keyboard Port
- 1 x HDMI Port
- 6 x USB 3.2 Gen1 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 (Phantom Gaming Tuning)
- ASRock Polychrome SYNC
- ASRock Key Master
- ASRock XFast LAN
UEFI
- ASRock Full HD UEFI
- ASRock Instant Flash
These utilities can be downloaded from ASRock Live Update and APP Shop.
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
- 3 x Screw for M.2 Socket
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
- ATX Form Factor: 12.0-in x 9.6-in, 30.5 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
4.1 ★★★★★
Based on 2242 reviews
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Product Reviews
★★★★★ 5
Great coverage for a chesty gal with smaller band size
Size: 34F, Color: Gentle Rose
I don’t know why I can find bras that fit better on Amazon than in store, but this one is a good one. It fits well and is as comfy as you can expect from an underwire. It has zero lining and that can be an issue, so pay attention to that if it is important to you for the nip coverage!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025
★★★★★ 1
Did not last long
Size: 44E, Color: Black
I really like this bra very much, it was very comfortable and fit well, but the wire popped out of the fabric in less than a couple of months. Very frustrating.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 2
Good bra but doesn't last long
Size: 40H, Color: Brown Purple
Love these bras...BUT...after just a few short months they have broken. I bought a bunch of these at first because they are very comfy and fit well. However, I now only have 2 left because the underside has broken on all the rest. It has snapped on 2 of them and 3 other it has popped through the lining. I'll have to find something else.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
★★★★★ 5
Practical and stylish backpack for work and everyday use.
Color: Apricot, Size: 16 Inch
This backpack is incredibly versatile and functional, designed for daily work, travel, and professional use. It features multiple compartments for easy organization of your belongings, including a dedicated laptop compartment that keeps your device secure and separate from other personal items.
The exterior is made of water-resistant nylon, offering added protection against moisture and daily wear and tear, making it ideal for the office or business meetings. Padded and adjustable straps provide comfort during extended use, while double zippers allow for quick and easy access to the main compartments.
With its sleek and functional design, this backpack strikes the perfect balance between style and practicality, suitable for both business environments and casual or travel use. Its dimensions allow you to comfortably carry standard-sized laptops, documents, accessories, and everyday personal items.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 5
Elegant, Functional, and High Quality
Color: Apricot, Size: 16 Inch
I’m very impressed with this backpack. The design is modern and elegant, perfect for both work and daily use. The neutral beige color looks sophisticated and matches easily with any outfit.
The material feels high quality and durable, with smooth zippers and excellent stitching. It has a well-structured shape that keeps its form even when not fully packed. The compartments are very practical, allowing great organization for a laptop, documents, and personal items.
The straps are comfortable and padded, making it easy to carry for long periods without discomfort. Overall, this backpack combines style, functionality, and comfort perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
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