PRIME B840M-K - Motherboard ASUS - Free user manual and instructions
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| Product Type | Motherboard |
| Model | PRIME B840M-K |
| Brand | ASUS |
| Form Factor | Micro-ATX |
| Dimensions (W x D) | 244 mm x 244 mm |
| Weight | Approximately 0.5 kg |
| Power Supply Connector | 24-pin ATX + 8-pin CPU |
| CPU Socket | AMD AM4 |
| Supported Processors | AMD Ryzen 5000/4000/3000/2000 series |
| Chipset | AMD B840 |
| Memory Type | DDR4, 2 x DIMM slots |
| Memory Max Capacity | 64 GB |
| Graphics Output | HDMI, VGA |
| Storage Interfaces | 4 x SATA 6Gb/s, 1 x M.2 (SATA/PCIe) |
| USB Ports | USB 3.2 Gen 1, USB 2.0 |
| Expansion Slots | 1 x PCIe 4.0 x16, 2 x PCIe 3.0 x1 |
| Audio | Realtek ALC887, 8-channel |
| Ethernet | Realtek RTL8111H Gigabit |
| Care and Cleaning | Use compressed air to remove dust; avoid liquids. |
| Safety | Ensure proper grounding; use anti-static wrist strap. |
| Spare Parts and Repairability | Spare parts available through ASUS support; standard components replaceable. |
| General Information | Designed for mainstream users, supports ASUS 5X Protection III. |
Frequently Asked Questions - PRIME B840M-K ASUS
What CPU is compatible with ASUS PRIME B840M-K?
The motherboard supports AMD Ryzen 5000, 4000, 3000, and 2000 series processors with AM4 socket.
Does it support DDR4 memory?
Yes, it has 2 DDR4 DIMM slots supporting up to 64 GB with speeds up to 4400 MHz (OC).
How many M.2 slots does it have?
One M.2 slot supporting SATA and PCIe 3.0 x4 mode.
Can I use integrated graphics?
Yes, if the CPU has integrated graphics, output is via HDMI or VGA port.
What is the form factor of this motherboard?
It is a Micro-ATX motherboard with dimensions 244mm x 244mm.
How do I update the BIOS?
Use ASUS EZ Flash 3 in BIOS setup, or use the Windows-based ASUS EZ Update tool.
Does it support PCIe 4.0?
The primary PCIe x16 slot runs at PCIe 4.0 when paired with Ryzen 3000/5000 series CPUs.
What is the maximum wattage for CPU?
The 8-pin CPU power connector can handle up to 125W TDP.
Does it have RGB headers?
It includes one 4-pin RGB and one 3-pin addressable RGB header.
Where can I find the manual?
The manual is available for free download on the ASUS support website or via the product page.
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USER MANUAL PRIME B840M-K ASUS
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Product information
Brand : ASUS
Model : PRIME B840M-K
Category : Motherboard