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ASUS
ASUS PRIME B550M-A AC AMD motherboard
Micro-ATX AM4 board with PCIe 4.0 x16, dual M.2 slots, 802.11ac Wi-Fi, USB 3.2 Gen 2 Type-A and four DDR4 slots up to 128 GB
- CPU Socket TypeAM4
- CPU TypeSupports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Seri
- ChipsetAMD B550
- Number of Memory Slots4x288pin (DDR4)
- Memory StandardDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
- Maximum Memory Supported128GB
Option
- ASUS PRIME B550M-A AC AM4
- ASUS PRIME B550M-A AC AM4 + AMD Ryzen 5 5500 + Team T-Force Delta RGB Model TF3D416G3200HC16FDC01
Les versions barrées existent, mais ne sont pas disponibles ici.
- Ready for Ryzen 5000 and 3000 series CPUs with AM4 socket
- Ultrafast storage via dual M.2 slots supporting PCIe 4.0 and SATA modes
- Built-in 802.11ac Wi-Fi and USB 3.2 Gen 2 Type-A for quick connections
- Aura Sync RGB lighting synchronises effects across compatible components
- 128 GB DDR4 capacity across four slots with XMP 2.0 profiles
AM4 socket for Ryzen 5000 and 3000 Series
The ASUS PRIME B550M-A AC is a micro-ATX motherboard built around the AMD B550 chipset and AM4 socket. It supports Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors. The board includes integrated 802.11ac Wi-Fi and Aura Sync RGB lighting for system coordination.
DDR4 memory up to 128 GB capacity
Four 288-pin DDR4 slots accept up to 128 GB in dual-channel mode. Supported speeds range from 2133 MT/s to 4866 MT/s when overclocked, with XMP 2.0 profiles available. ECC memory support depends on the installed CPU. The primary M.2 socket handles 2242, 2260, 2280 and 22110 form factors over PCIe 4.0 x4 or SATA.
PCIe 4.0 x16 slot and SATA 6 Gbps limits
A single PCIe 4.0 x16 slot provides high-bandwidth graphics connectivity when paired with a compatible Ryzen processor; a second slot runs at PCIe 3.0 x16. Two PCIe 3.0 x1 slots add expansion room. Four SATA 6 Gbps ports support RAID 0, 1 and 10 arrays. USB 3.2 Gen 2 Type-A ports deliver 10 Gbps peripheral throughput.
Points forts
- Ready for Ryzen 5000 and 3000 series CPUs with AM4 socket
- Ultrafast storage via dual M.2 slots supporting PCIe 4.0 and SATA modes
- Built-in 802.11ac Wi-Fi and USB 3.2 Gen 2 Type-A for quick connections
- Aura Sync RGB lighting synchronises effects across compatible components
- 128 GB DDR4 capacity across four slots with XMP 2.0 profiles
Caractéristiques
| Brand | ASUS |
|---|---|
| Model | PRIME B550M-A AC |
| CPU Socket Type | AM4 |
| CPU Type | Supports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series Processors * Refer to www.asus.com for CPU support list. |
| Chipset | AMD B550 |
| Number of Memory Slots | 4x288pin (DDR4) |
| Memory Standard | DDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3200 / 3000 / 2933 / 2800 / 2666 / 2400 / 2133* * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types. |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | Intel XMP 2.0 |
| ECC Supported | ECC Memory (ECC mode) support varies by CPU. |
| Buffer Supported | Un-buffered |
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16* * Actual support may vary by CPU. |
| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16 |
| PCI Express x16 | None |
| PCI Express x1 | 2 x PCIe 3.0 x1 |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
| M.2 | AMD Ryzen 5000 Series / 3000 Series Desktop Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 4.0 x4 and SATA modes) storage devices support AMD Ryzen 5000 G-Series / 4000 G-Series Desktop Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 3.0 x4 and SATA modes) storage devices support AMD B550 Chipset: 1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support |
| SATA RAID | 0/1/10 |
| Onboard Video Chipset | Supported only by CPU with integrated graphic |
| Audio Chipset | Realtek ALC887/897 |
| Audio Channels | 7.1 Channels* * A chassis with an HD audio module in the front panel is required to support 7.1-channel audio output. |
| LAN Chipset | Realtek RTL8111H |
| Max LAN Speed | 1Gbps |
| Wireless LAN | Wi-Fi 802.11 a/b/g/n/ac |
| Bluetooth | Bluetooth 5.0 |
| Back I/O Ports | 1 x PS/2 keyboard/mouse combo port(s) 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port(s) 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jack(s) 1 x ASUS Wi-Fi Module |
| HDMI | 1 x HDMI |
| USB 3.0 | 2 x USB 3.0 |
| Onboard USB | 1 x USB 3.2 Gen 1 (up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s) |
| Other Connectors | 1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 2 x Chassis Fan connector(s) 2 x Aura RGB Strip Headers 1 x Addressable Gen 2 header(s) 1 x SPI TPM header 1 x S/PDIF out header(s) 1 x Front panel audio connector(s) (AAFP) 1 x Clear CMOS jumper(s) 1 x System panel connector 1 x COM port header 1 x Speaker connector |
| Form Factor | Micro ATX |
| LED Lighting | RGB |
| Dimensions (W x L) | 9.6" x 9.6" |
| Power Pin | 1 x 24-pin EATX Power connector(s) 1 x 8-pin EATX 12V Power connectors |
| Features | Software Features: ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU Digi+ VRM Fan Xpert 2+ - EZ update ASUS CPU-Z AI Charger DAEMON Tools Norton Anti-virus software (Free Trial for 60 days) WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode ASUS Special Features: ASUS 5X PROTECTION III - ASUS DIGI+ VRM - ASUS LANGuard - ASUS Overvoltage Protection - ASUS SafeSlot Core - ASUS Stainless-Steel Back I/O ASUS Q-Design - ASUS Q-DIMM - ASUS Q-Slot ASUS Thermal Soluti |
| Package Contents | Accessories: I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD User manual 1 x Wi-Fi moving antenna 1 x M.2 SSD screw package(s) |
| Poids d’expédition | 1.26 kg |
| Dimensions du colis | 275 × 266 × 68 mm |
Questions sur cet article
Will my existing DDR4 memory kits work with the four 288-pin slots on this board?
The board accepts DDR4 modules up to 128 GB total across four slots; supported speeds range from 2133 to 4866(OC) depending on the installed CPU.
How can I confirm the PCIe 4.0 x16 slot and dual M.2 sockets are active after assembly?
Enter the UEFI BIOS and verify the primary x16 slot reports Gen 4.0 and both M.2 sockets show PCIe 4.0 x4 or SATA mode as detected.
Does the package include Wi-Fi antennas and SATA cables, or must I buy them separately?
The retail box ships with the motherboard, I/O shield, Wi-Fi antennas, SATA 6 Gb/s cables and documentation; no extra cables are required for basic installation.
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