MSI B550-A Pro product image

Product imagery · Open Icecat

Motherboard · MSI

MSI B550-A Pro

Current productReleased 2020

MSI B550-A Pro is a ATX board for AM4 processors on the B550 chipset.

Key fit specifications
Socket: AM4 · Chipset: B550 · Form factor: ATX
Good fit for
Cost-controlled builds that will be replaced whole rather than upgraded
Know before buying
PCIe 5.0 drives run at PCIe 4.0 speeds in these M.2 slots

Best available price

$205.99

Authorized live data

1 verified partner store · 1 currently in stock. Delivery is included when the store provides it; destination-dependent tax is not.

Retailer offers

Compare the price payable before tax. Available verified offers appear first; commission never affects the order.

Recommended offer

Newegg at $205.99 before tax. This is the lowest verified current total.

Newegg

30-day returns · observed 12 h ago

In stock
Recommended
Item
$205.99
Delivery
Free
Total
$205.99
Go to Newegg

Total means item price plus the delivery amount disclosed by the retailer feed. Destination-dependent sales tax is not included. We are not the seller and take no payment.

Price history$206 now · $189 observed low · 141 observations Authorized live dataView chart +
Price position
Inside typical range
Current percentile
40th of 141
Observed trend
Rising +54.7%
Typical range
$190–$295
2026-08-262026-10-07
Observed low
$189
Median
$295
Observed high
$295
Dispersion
35.4% IQR / median

Orange marks the current item price; the grey band is the middle 50% of observations and the dashed line is the median. Every point comes from authorized retailer observations.

Key specifications

The values most likely to affect compatibility and comparison.

Socket
AM4
Chipset
B550
Form factor
ATX
Memory generation
DDR4
More specifications (10)Open +
Memory slots
4
Maximum memory
128 GB
Maximum memory speed
4800 MT/s
M.2 slots
2
M.2 max PCIe generation
4
SATA ports
6
Primary PCIe slot generation
4
VRM tier
Standard
Wi-Fi
No
Launch year
2020

Compatible parts

Parts in the current catalog that can be paired with this model.

  • CPU2 of 20 compatibleReview +

    Works with AMD Ryzen 5 5600, AMD Ryzen 7 5700X3D.

    AMD Ryzen 5 7600 uses socket AM5 but MSI B550-A Pro provides socket AM4.

    AMD Ryzen 5 7600X uses socket AM5 but MSI B550-A Pro provides socket AM4.

    AMD Ryzen 5 9600X uses socket AM5 but MSI B550-A Pro provides socket AM4.

  • Memory6 of 22 compatibleReview +

    Works with Corsair Vengeance LPX 16GB (2x8GB) DDR4-3200 CL16, Corsair Vengeance LPX 32GB (2x16GB) DDR4-3600 CL18, G.Skill Ripjaws V 32GB (2x16GB) DDR4-3600 CL16 and 3 more.

    Corsair Vengeance 32GB (2x16GB) DDR5-6000 CL30 is DDR5 but MSI B550-A Pro accepts DDR4 only.

    Corsair Vengeance 64GB (2x32GB) DDR5-6000 CL30 is DDR5 but MSI B550-A Pro accepts DDR4 only.

    Corsair Vengeance RGB 32GB (2x16GB) DDR5-6000 CL30 is DDR5 but MSI B550-A Pro accepts DDR4 only.

  • Case36 of 38 compatibleReview +

    Works with be quiet! Dark Base 700 Black, be quiet! Dark Base 701 Black, be quiet! Dark Base Pro 901 Black and 33 more.

    ASUS Prime AP201 accepts microATX, Mini-ITX boards, not ATX.

    Cooler Master MasterBox NR200P accepts Mini-ITX boards, not ATX.

  • Storage44 of 44 compatibleReview +

    Works with Corsair MP700 PRO 2TB, Crucial MX500 2TB, Crucial P310 2TB and 41 more.

    Corsair MP700 PRO 2TB is a PCIe 5.0 drive in a PCIe 4.0 slot. It works, capped near 7 400 MB/s instead of 12400 MB/s.

    Crucial T705 2TB is a PCIe 5.0 drive in a PCIe 4.0 slot. It works, capped near 7 400 MB/s instead of 14500 MB/s.

    Samsung 9100 PRO 2TB is a PCIe 5.0 drive in a PCIe 4.0 slot. It works, capped near 7 400 MB/s instead of 14700 MB/s.

Exact models and identifiers1 exact configuration · useful when checking a store listingOpen +
ConfigurationExact identityOffersBest known total
Default configurationDefault family configuration
GTIN 0824142219362MPN B550-A PRO
1$206
Source details16 field-level source claims, retrieval dates and confidence valuesOpen +
FieldSourceRetrievedConfidence
biosUpdateRequiredForCpusRigwise curated manufacturer catalogAug 12, 202698%
chipsetOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
formFactorOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
launchYearRigwise curated manufacturer catalogAug 12, 202695%
m2MaxPcieGenRigwise curated manufacturer catalogAug 12, 202695%
m2SlotsOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
maxMemoryGbOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
maxMemoryMtsOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
memoryGenerationOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
memorySlotsOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
pcieSlotGenOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
platformLongevityIndexRigwise curated manufacturer catalogAug 12, 202695%
sataPortsOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
socketOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%
vrmTierRigwise curated manufacturer catalogAug 12, 202695%
wifiOpen Icecat motherboard content (opens source in a new tab)Oct 07, 202695%