







Motherboard ASUS PRIME B550-PLUS
- CPU socket
- AM4
- Chipset (MB)
- AMD B550 MB
- Form factor
- ATX
- Supported memory
- DDR4
- Number of memory slots
- 4
Description
ASUS PRIME B550-PLUS is an ATX motherboard for AM4, aimed at a stable mid-range Ryzen build that covers both gaming and work. It is based on the AMD B550 chipset, which opens the door to 3rd Gen AMD Ryzen and future AM4 Ryzen processors, as well as PCIe 4.0 for faster SSDs and GPUs. With DDR4 support up to 128 GB RAM and rich expansion options, this is a good foundation for a long-term upgrade cycle. The built-in Realtek audio and Gigabit LAN cover the basic needs for gaming and multimedia without unnecessary extras.
What you get
With four DIMM slots and dual-channel DDR4 memory, you can start with 16–32 GB RAM and comfortably reach up to 128 GB if at some point you switch to heavier multitasking or rendering software. Support for high frequencies up to 4600+ MHz (O.C.) gives you the freedom to combine faster kits for better system responsiveness. The two M.2 slots – one with PCIe 4.0 x4, the other with PCIe 3.0 x4 – allow you to install one super-fast NVMe for OS and games, plus a second for projects or work. The six SATA3 ports with RAID 0/1/10 give you flexibility for a mass storage solution, whether for a game library, media, or archives. Thanks to the combined DisplayPort and HDMI, you can use the integrated graphics of supported CPUs without rushing to buy a separate GPU.
- CPU socket AM4 with support for 3rd Gen AMD AM4 Ryzen / Future AMD Ryzen provides a wide range of processors and upgrade options.
- AMD B550 chipset provides access to PCIe 4.0 and modern features for mid-range and upper mid-range configurations.
- 4 DDR4 memory slots with a maximum of 128 GB and frequencies up to 4600+ MHz (O.C.) allow flexible combinations of fast and high-capacity RAM.
- 2 x M.2 Socket 3 slots – one in PCIe 4.0 x4 / SATA mode and one in PCIe 3.0 x4 / SATA – cover the needs for both the fastest NVMe SSDs and more affordable options.
- 6 x SATA3 6.0 Gb/s ports with RAID 0, 1, 10 are convenient for large arrays of disks – from games to backups and media archives.
- PCIe expansion slots with 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16 (x4) and 3 x PCIe 3.0 x1 allow you to add a powerful GPU, additional cards, and use PCIe bifurcation for RAID on CPU.
- Realtek ALC887 7.1-Channel HD Audio and Gigabit LAN (RTL8111H) provide decent sound and stable network without the need for separate cards.
- The rear I/O panel offers DisplayPort 1.2 and HDMI 2.1 (4K@60Hz), plus a total of 8 USB ports, including USB 3.2 Gen 2 Type-A and Type-C for modern peripherals.
- A total of 14 USB ports (8 rear + 6 front) give you enough connectors for keyboards, mice, controllers, external drives, and other devices.
- 24-pin + 8-pin power connectors provide stable power to the CPU and motherboard, suitable even for more serious Ryzen processors.
Who it is suitable for
This motherboard is a logical choice for mid-range and upper mid-range AM4 builds – gaming at 1080p/1440p, streaming, photo and video editing, as well as home workstations. It is suitable if you want modern features like PCIe 4.0 and many M.2/SATA options, but do not need extras from the top enthusiast segment. If you are aiming for extreme overclocking or very specific high-end features, you might want to look at a higher class.
The most sensible aspect of the ASUS PRIME B550-PLUS is the combination of PCIe 4.0, two M.2 slots, plenty of USB, and up to 128 GB RAM in a standard ATX format. You get a stable base for a Ryzen configuration that can comfortably grow over time according to your needs.
Full specifications
- Manufacturer
-
ASUS
- CPU socket
-
AM4
- Chipset (MB)
- AMD B550
- Form factor
- ATX
- Supported processors
-
Supports 3rd Gen AMD AM4 Ryzen / Future AMD Ryzen
- Supported memory
-
DDR4
- Number of memory slots
- 4
- Maximum RAM capacity
- 128 GB
- Memory frequency (MHz)
-
4600+(O.C)/4533(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)3600(O.C.)/3466(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/2800(O.C.)/2666/2400/2133
- Support for dual-channel memory
- Yes
- Built-in audio
-
Realtek ALC887 7.1-Channel High Definition Audio CODEC
- Built-in LAN
-
1 x Realtek RTL8111H Gigabit LAN 10/100/1000 Mb/s
- SATA interface
- 6 x SATA3 6.0 Gb/s
- RAID support
- 0,1,10
- M2 slot
-
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 (SATA & PCIe 4.0 x4 mode)1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 (SATA & PCIE 3.0 x 4 mode)
- Expansion slots
-
3rd Gen AMD Ryzen Processors:1 x PCIe 4.0 x16 (x16 mode)AMD B550 Chipset:1 x PCIe 3.0 x16 (x4 mode)3 x PCIe 3.0 x1** Support PCIe bifurcation for RAID on CPU function.
- Power connector
-
1 x 24-pin1 x 8-pin
- Graphics
-
1 x DisplayPort 1.2*1 x HDMI 2.1(4K@60HZ)*Graphics specifications may vary between CPU types.
- Multi GPU technology
- AMD 2-Way CrossFireX Technology
- BIOS
- 256 Mb Flash ROM, UEFI AMI BIOS
- Dimensions
- 30.5 cm x 24.4 cm
- Processor generation
-
3rd generation4th generation5th generation
- Warranty
- 36 months
- OS
-
Windows 10 64-bit
- USB ports
-
Rear USB Port ( Total 8 )2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C®)4 x USB 3.2 Gen 1 port(s)(4 x Type-A)2 x USB 2.0 port(s)(2 x Type-A)Front USB Port ( Total 6 )2 x USB 3.2 Gen 1 port(s)(2 x Type-A)4 x USB 2.0 port(s)(4 x Type-A)
- Rear I/O panel
-
1 x DisplayPort1 x HDMI1 x LAN (RJ45) port(s)2 x USB 3.2 Gen 2 (teal blue) (1 x Type-A+1 x USB Type-C®)4 x USB 3.2 Gen 1 (blue) Type-A2 x USB 2.01 x Optical S/PDIF out5 x Audio jack(s)
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