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ASRock B850M Challenger AM5 AMD B850 Micro ATX Motherboard
- Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
- 8+1+1 Power Phase, Dr.MOS for VCore+ MISC
- 4 x DDR5 DIMMs
- Supports Dual Channel, up to 8000+ (OC)
- 1 PCIe 5.0 x16, 1 PCIe 4.0 x16, 1 PCIe 4.0 x1
- 1 M.2 Key E for WiFi
- Graphics Output Options: 1 HDMI
- Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio
- 1 Blazing M.2 (PCIe Gen5x4)
- 1 Hyper M.2 (PCIe Gen4x4)
- 4 SATA3
- 1 USB 3.2 Gen1 Type-C (Front)
- 8 USB 3.2 Gen1 (6 Rear, 2 Front)
- 6 USB 2.0 (2 Rear, 4 Front)
- Realtek 2.5G LAN
- Supports Lightning Gaming Ports
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Learn more about the Detailed Specifications
| Brand | ASRock |
|---|---|
| Series | Challenger |
| CPU Socket Type | AM5 |
|---|
| Chipset | AMD B850 |
|---|---|
| South Bridge | AMD B850 |
| Number of Memory Slots | 4x288pin (DDR5) |
|---|---|
| Memory Standard | DDR5 8000 |
| Maximum Memory Supported | 256GB |
| Channel Supported | Dual Channel |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| PCI Express 5.0 x16 | 1 x PCI Express 5.0 x16 |
|---|---|
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16 |
| PCI Express 2.0 x16 | 0 x PCI Express 2.0 x16 |
| PCI Express x16 | 2 x PCI Express x16 |
| PCI Express x4 | 1 x PCI Express x4 |
| PCI Express x1 | 1 x PCI Express x1 |
| Other Slots | 1 x M.2 Key E |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
|---|---|
| M.2 | 2 x M.2 (Support PCIe 5.0 x4 & PCIe 4.0 x4) |
| SATA RAID | 0/1/10 |
| Onboard Video Chipset | AMD RDNA Graphics |
|---|
| Audio Chipset | Realtek ALC897 |
|---|---|
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek RTL8125BG |
|---|---|
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Yes |
| Bluetooth | No |
| Back I/O Ports | 2 x Antenna Mounting Points, 1 x HDMI, 6 x USB 3.2 Gen1, 2 x USB 2.0, 1 x RJ-45 LAN, 1 x BIOS Flashback Button, 3 x HD Audio Jacks |
|---|---|
| Video Ports | HDMI |
| HDMI | 1 x HDMI |
| RJ45 | 1 x RJ45 |
| USB 3.1 | 8 x USB 3.1 |
| USB 3.0 | 8 x USB 3.0 |
| USB 1.1/2.0 | 8 x USB 3.0 + 6 x USB 2.0 |
| USB Type-C | 1 x USB Type-C port, with USB 3.2 Gen1 support |
| Audio Ports | 3 Ports |
| Onboard USB | 1 x USB 3.2 Gen1 Type-C header, 1 x USB 3.2 Gen1 header, 2 x USB 2.0 headers |
|---|
| Form Factor | Micro ATX |
|---|---|
| LED Lighting | RGB |
| Dimensions (W x L) | 9.6" x 9.6" |
| Power Pin | 24 Pin |
| First Listed on Newegg | February 23, 2026 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.com's 30-Day Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-909-590-8308
- Support Email: [email protected]
- Support Website
- View other products from ASRock
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