AMD Core Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboards
Released: Not on record
$245.84
from
US · Amazon.com
·
Updated 2 months ago
Last updated Sep 3, 2026 03:13 UTC
·
Price sourced from Amazon.com (United States).
- Depth
- 244 mm
- Wi-Fi
- N
- Width
- 244 mm
- Height
- 51 mm
- Weight
- 845 g
- BIOS type
- UEFI AMI
- Audio chip
- Realtek ALC887
- Ethernet LAN
- Y
- RAID support
- Y
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Overview
The ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX (Depth: 244 mm). Full verified specifications are listed below.
Compatibility
Socket
Socket AM4
Form factor
Micro ATX
- Pairs with CPUs using the Socket AM4 socket.
- Physical size is Micro ATX — check your case supports this form factor.
Compatibility data is automatically generated. Always verify critical specs before purchase.
Technical Specifications
Showing 28 key specifications of 67
All values come from this product’s catalog record.- Depth
- 244 mm
- Wi-Fi
- No
- Width
- 244 mm
- Height
- 51 mm
- Weight
- 845 g
- BIOS type
- UEFI AMI
- Audio chip
- Realtek ALC887
- Ethernet LAN
- Yes
- RAID support
- Yes
- Intended use
- PC
- Microphone input
- Yes
- LAN controller
- Realtek RTL8111H
- Colour
- Black,Silver
- BIOS memory size
- 256 MB
- Socket
- Socket AM4
- CPU fan connector
- Yes
- Clear CMOS jumper
- Yes
- Headphone outputs
- 1
- Memory slots type
- DIMM
- Unbuffered memory
- Yes
- Top Wi-Fi standard
- Not available
- USB 2.0 connectors
- 2
- HDMI ports
- 1
- Chipset
- AMD B550
- PS/2 ports
- 1
- DVI-D ports quantity
- 1
- mSATA ports quantity
- 0
- Audio channels
- 7.1
Show all 67 specifications
- Memory slots
- 4
- Integrated graphics
- No
- CPU brand
- AMD
- Supported memory types
- DDR4-SDRAM
- USB 2.0 ports
- 0
- Ethernet interface type
- Gigabit Ethernet
- Max memory
- 128 GB
- Form factor
- Micro ATX
- Number of M.2 (M) slots
- 2
- SATA ports
- 0
- Ethernet ports
- 1
- Motherboard chipset family
- AMD
- VGA ports
- 1
- Compatible processor series
- AMD Ryzen 3000 Series
- EPS power connector (8-pin)
- Yes
- Front panel audio connector
- Yes
- ATX Power connector (24-pin)
- Yes
- Number of SATA II connectors
- 0
- Number of SATA III connectors
- 4
- Supported memory clock speeds
- 2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600
- PCI Express x1 (Gen 3.x) slots
- 2
- PCI Express x16 (Gen 4.x) slots
- 1
- Number of chassis fan connectors
- 2
- Number of Parallel ATA connectors
- 0
- Number of storage drives supported
- 6
- Supported storage drive interfaces
- M.2,SATA III
- Windows versions supported
- Windows 10 x64
- USB 3.2 Gen 1 (3.1 Gen 1) connectors
- 1
- USB 3.2 Gen 2 (3.1 Gen 2) connectors
- 0
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- 4
- USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
- 0
- USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
- 2
- USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
- 0
- buildcores_verified
- 1
- buildcores_opendb_id
- 509ca758-52d6-45d7-905e-eb4ec7d1a38f
- buildcores_category
- Motherboard
- socket
- AM4
- form_factor
- Micro ATX
- Customs (HS) code
- 84733020
Market Value History
Chart unavailableThe price records could not be drawn. The table remains available below.
Price history table
| Date | Price |
|---|---|
| 2025-06-02 | $160.09 |
| 2025-06-09 | $168.82 |
| 2025-06-16 | $188.19 |
| 2025-06-23 | $180.10 |
| 2025-07-01 | $162.22 |
| 2025-07-07 | $178.21 |
| 2025-07-14 | $154.68 |
| 2025-07-21 | $154.68 |
| 2025-07-28 | $154.68 |
| 2025-08-04 | $154.68 |
| 2025-08-11 | $156.36 |
| 2025-08-18 | $142.14 |
| 2025-08-25 | $157.70 |
| 2025-09-01 | $147.21 |
| 2025-09-08 | $160.50 |
| 2025-09-15 | $190.01 |
| 2025-09-22 | $188.35 |
| 2025-09-29 | $188.35 |
| 2025-10-06 | $166.39 |
| 2025-10-13 | $164.89 |
| 2025-10-21 | $165.49 |
| 2025-10-28 | $165.59 |
| 2025-11-03 | $163.80 |
| 2025-11-17 | $174.17 |
| 2025-11-24 | $175.77 |
| 2025-12-05 | $175.77 |
| 2025-12-08 | $150.20 |
| 2025-12-18 | $151.80 |
| 2025-12-22 | $151.80 |
| 2025-12-29 | $152.21 |
| 2026-01-05 | $204.43 |
| 2026-01-12 | $204.43 |
| 2026-01-21 | $194.05 |
| 2026-01-28 | $221.34 |
| 2026-02-13 | $223.02 |
| 2026-02-20 | $219.66 |
| 2026-02-24 | $219.48 |
| 2026-03-05 | $268.98 |
| 2026-03-11 | $268.97 |
| 2026-03-17 | $270.64 |
| 2026-03-23 | $247.37 |
| 2026-03-30 | $265.66 |
| 2026-04-08 | $260.00 |
| 2026-04-17 | $255.73 |
| 2026-04-20 | $255.24 |
| 2026-04-28 | $254.62 |
| 2026-05-04 | $254.72 |
| 2026-05-12 | $254.82 |
| 2026-05-18 | $257.82 |
| 2026-06-19 | $198.09 |
| 2026-06-22 | $259.83 |
| 2026-06-30 | $197.99 |
| 2026-07-06 | $187.64 |
| 2026-07-13 | $187.55 |
| 2026-07-20 | $187.74 |
| 2026-07-27 | $194.43 |
| 2026-08-03 | $194.00 |
| 2026-08-10 | $193.40 |
| 2026-08-17 | $261.84 |
| 2026-08-26 | $245.84 |
Customer Reviews & Feedback
Verified Amazon Score
4.4
/ 5.0
Based on 37 verified customer reviews on Amazon US.
5 star
79%
4 star
13%
3 star
4%
2 star
2%
1 star
2%
Review Verification
Hardware Quest synchronizes these ratings daily with Amazon to reflect real buyer experiences, build quality, and long-term reliability.
Sources
Product lifecycle
Catalog: on-marketThe current catalog record marks this product as on-market; this is not independent manufacturer confirmation.
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