ASUS Prime B550M-A WiFi II AMD Micro ATX DDR4 Motherboard with PCIe
4.0, WiFi 6, ECC Memory, HDMI 2.1, RGB Header
than the $118.99 it sold for on the typical day since September 21
at Amazon
Near the bottom of its recorded range.
Go to Amazon$89.99 is near the bottom of its recorded range.
It has cost this or less on only 25% of the 20 days we have watched it. The lowest we have seen is $85.49, on October 7.
The lowest since we started tracking it on September 21. Today's price is $29.00 below its usual $118.99.
The lowest, $85.49 on October 7, was a deal only Prime members could buy at. The lowest anyone could pay was $89.99.
This describes the prices we recorded. It is not a forecast of where this one goes next.
Price at AmazonVerified
Price history
One line: the best price any tracked retailer charged, per day.
Deal for Prime members only
Shaded stretches are sales, from our calendar.
| Price | Now | Lowest | Highest | Usual | Average | Days recorded |
|---|---|---|---|---|---|---|
| New | $89.99 | $85.49 on Oct 7 | $118.99 on Sep 21 | $118.99 | $111.52 | 20 |
Sales events
Next on the calendar: Black Friday, November 27. We keep checking this price through it and report here what it did.
What our record shows
- $4.50 more than the $85.49 it cost on October 7 — this price went up, not down.
Computed from our own checks at Amazon as of October 10. No line here uses a price a retailer told us about.
Where to buy
- Held for
- 2d
- Their 20-day low
- $85.49
- Checked
- 6h ago
Prices checked at least every 12 hours. “Held for” is how long that retailer has been charging this price. A hidden price is one we cannot re-confirm recently enough to publish.
We earn a commission on purchases. It never affects our rankings.
Tell me when it drops
A notification in this browser when the price falls. No email, no account, nothing to install.
A notification carries a button that stops that alert; blocking notifications for this site in your browser stops them all.
What it is
7 attributes, in the retailer’s own words. We record the prices; these we only pass on.
- Size
- B550M-A | M.2x2 | D4 | WiFi6
- Color
- BLACK
- Weight
- 2.55 pounds
- Dimensions
- 10.8 × 10.5 × 2.8 inches
- Model
- PRIME B550M-A WIFI II
- Released
- July 2022
- Warranty
- 3 Years
Cheaper in PC components, and what changes
Things we track on the same shelf for at least 10% less than $89.99, with the attributes the retailers describe differently. Their words, not our judgement — we record prices, we do not test products.
msiMAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty$79.99 at Amazon $10.00 lessSize: 850W (PCIE 5) instead of B550M-A | M.2x2 | D4 | WiFi6Dimensions: 12 × 8.75 × 4.92 inches instead of 10.8 × 10.5 × 2.8 inches
ApeviaATX-SL850W Soul 850W Fully Modular Power Supply ATX 3.0 & 3.1 Compatible, PCIe 5.1 12V-2x6 Connector ATX Active PFC, DC to DC Converter Design, 140mm Silent Fan, RoHS Compliance$62.99 at Amazon $27.00 lessSize: 850W instead of B550M-A | M.2x2 | D4 | WiFi6Weight: 4.8 pounds instead of 2.55 pounds
msiA520M-A PRO V1 Gaming Motherboard (AMD Ryzen 5000, AM4, DDR4, PCIe 3.0, SATA 6Gb/s, M.2, USB 3.2 Gen 1, DVI/HDMI, Micro-ATX)$69.99 at Amazon $20.00 lessDimensions: 10 × 10 × 3 inches instead of 10.8 × 10.5 × 2.8 inchesReleased: June 2025 instead of July 2022
Every change we recorded at Amazon
Every row is a price we saw change. We write one only when a price actually moves, so a gap here means the price held.
| When | Price | Change |
|---|---|---|
| · 2d ago | $89.99 | +$4.50 |
| · 3d ago | $85.49 | −$4.50 |
| · 4d ago | $89.99 | −$29.00 |
| · 19d ago | $118.99 | first seen |
Others we track in PC components
See all PC components prices
ThermaltakeToughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty$89.99 · low $79.991 retailer · 5 recorded prices
msiB550M PRO-VDH WiFi ProSeries Motherboard (AMD Ryzen 5000, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 1, Wi-Fi, Bluetooth, D-SUB/HDMI/DP, Micro-ATX)$89.991 retailer · 1 recorded price
msiPRO B550M-P Motherboard, mATX - Supports AMD Ryzen 5000/5000 G-Series, 4000 G-Series, 3000/3000 G-Series Desktop Processors, AM4 - DDR4 Memory Boost (up to 4400+ MT/s OC), PCIe 4.0 x16, M.2 Gen4$89.99 · low $66.481 retailer · 8 recorded prices
MontechCentury II 850W ATX 3.1 Fully Modular 80 Plus Gold Power Supply$89.901 retailer · 1 recorded price
ASRockSteel Legend White Edition SL-850GW 850W ATX 3.1 PCle 5.1 Full Modular 10 Years Warranty 135 mm FDB Fan iCOOL Intelligent Power Supply 80 Plus Gold Cybenetics Platinum 12V-2x6 Cable$84.991 retailer · 1 recorded price- msiMAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty$79.99 · low $74.991 retailer · 3 recorded prices
$89.99
at Amazon · we earn a commission