Asus PRIME B860M-A-CSM vs B860M-BRO Motherboard Comparison

Asus PRIME B860M-A-CSM and Asus B860M-BRO are both motherboards with the same Socket (LGA1851), Form factor (Micro ATX) and Chipset (Intel B860). The main differences are in Supported Memory, PCI-Express x16 Slots, PCI-Express x1 Slots and M.2 Devices support.

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Asus PRIME B860M-A-CSM	Asus B860M-BRO
Prices (Change region) There are no offers available in your selected region. Other merchants are available in another region. In Stock Free shipping €117.03 In Stock Free shipping €146.31 In Stock Free shipping €146.37 In Stock Free shipping €154.72 In Stock + €4.99 Shipping €156.05 In Stock + €4.99 Shipping €156.08 In Stock Free shipping €164.00 Out of Stock Free shipping €170.87 Out of Stock + €4.99 Shipping €174.60 In Stock + €7.46 Shipping €176.24 Show 7 more offers	Prices (Change region) In Stock Free shipping $155.87
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Brand Asus	Brand Asus
Model PRIME B860M-A-CSM	Model B860M-BRO
Release Date 📅 January 2025	Release Date 📅 January 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►	Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►
Socket LGA1851	Socket LGA1851
Form factor Micro ATX	Form factor Micro ATX
Chipset Intel B860	Chipset Intel B860
Supported Memory DDR5 4800Mhz 8600Mhz	Supported Memory DDR5 4800Mhz 7200Mhz 7600Mhz 7800Mhz 8000Mhz 8200Mhz 8400Mhz 8600Mhz 8800Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS ** RAM support may also depend on the CPU memory controller
ECC RAM Support No	ECC RAM Support No
SLI Support No	SLI Support No
CrossFire Support No	CrossFire Support No
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Wireless LAN No	Wireless LAN No
PCI-Express x16 Slots 2	PCI-Express x16 Slots 1
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 1	PCI-Express x1 Slots 2
SATA 6 Gbps Ports 4	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 2	M.2 Ports 2
M.2 Devices support 2242 / 2260 / 2280 - M Key 2242 / 2260 / 2280 - M Key	M.2 Devices support 2280 - M Key 2280 - M Key
RAM Slots 4	RAM Slots 2
Maximum Supported RAM 256 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 1	Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1	Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 1	Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0	Onboard USB 3.2 Gen 2x2 0