ASUS PRIME B650M-A II-CSM Ports
HDMI 2.0b Out Port: Outputs digital video and audio at up to 4K resolution (4096x2160). Also supports HDR.
VGA Out Port: Video Graphics Adapter (VGA) port for outputting analog video.
DisplayPort 1.4 Out Port: Outputs digital video and audio at up to 8K resolution (7680x4320).
USB BIOS Flashback Button: Updates UEFI / BIOS from file on connected USB drive without entering pre-boot menu or OS.
USB 3.2 Gen 1 (USB 3.0) Port(s): Universal Serial Bus (USB) port for connecting USB 3.2 Gen 1 and older devices (5 Gb/s).
PS/2 Hybrid Port: Connection supporting either a PS/2 mouse or PS/2 keyboard.
USB 2.0 Input: USB 2.0, Asynchronous Transfer Mode.
USB 3.2 Gen 2 (USB 3.1) Port(s): Universal Serial Bus (USB) port for connecting USB 3.2 Gen 2 and older devices (10 Gb/s).
2.5G LAN (RJ45): RJ-45 plug for connecting to a wired Local Area Network (LAN) via Ethernet at up to 2.5 Gb
Microphone Audio Jack: 3.5mm analog audio jack for microphone input to the computer.
Front Speakers: 3.5mm analog audio jack for output to speakers (front, if using surround sound) or headphones.
Line In Audio Jack: 3.5mm analog audio jack for line-level input to the computer.
ASUS PRIME B650M-A II-CSM Schematic
For external connectivity, this board has basic analog audio outputs, 2.5Gb Ethernet, and eight USB Type-A ports of varying speeds. There are also HDMI, DisplayPort, and VGA outputs for use with the graphics built into AMD's Ryzen processors, though most users will want to add a dedicated video card for improved performance.
With no built-in WiFi or Bluetooth, this is a great motherboard option for users who need to comply with government or corporate limits on wireless connectivity.
Model: Asus PRIME B650M-A II-CSM
Specifications
| Socket | AM5 |
| CPU Compatibility | AMD Ryzen 7000 Series Desktop Processors |
| Form Factor | MicroATX |
| Chipset Manufacturer | AMD |
| Chipset | B650 |
| Wired Network Connectivity | 2.5G Networking |
| Audio Controller | Onboard Realtek HD Audio |
| Color | Black |
| Windows Support | Windows 11 |
| Linux Support | Yes |
Memory Support | |
| Type | DDR5 |
| Maximum Speed | 5200 MHz |
| Number of Slots | 4 |
| Maximum Size per Slot | 32 GB |
| Maximum Amount Supported | 128 GB |
Onboard Video | |
| Chipset Manufacturer | AMD |
| Processor Type | RDNA2 |
| Maximum Resolution | 7,680 x 4,320 |
| VGA | 1 |
| HDMI | 1 |
| HDMI Version | 2.0b |
| DisplayPort | 1 |
| DisplayPort Version | 1.4 |
External Connections | |
| USB 2.0 | 4 |
| USB 3.2 Gen 1 (USB 3.0) | 2 |
| USB 3.2 Gen 2 (USB 3.1) | 2 |
| Audio Out | Stereo |
| Audio In | Line-In/Microphone |
| LAN (RJ45) | 1 |
| BIOS Flashback | Yes |
Internal Connections | |
| USB 2.0 | 2 (providing 4 ports) |
| USB 3.2 Gen 1 (USB 3.0) | 2 |
| USB 3.2 Gen 1 Type C | 1 |
| SATA III 6.0Gbps | 4 |
| M.2 Connector | 2 |
| M.2 Support | 1x 42-80mm (PCIe 5.0), 1x 42-80mm (PCIe 4.0) |
| Maximum M.2 Length | 80 mm (3.1 in) |
| TPM (module sold separately) | 1 |
| Compatible TPM | Asus TPM-SPI |
SATA Controllers | |
| SATA III 6.0Gbps Controller 1 | 4x via AMD B650 Chipset |
Expansion Slots | |
| Slot 1 | PCI Express 4.0 x16 |
| Slot 2 | Slot not available on this board |
| Slot 3 | PCI Express 4.0 x1 in a x16 size |
| Slot 4 | PCI Express 4.0 x1 in a x16 size |
Additional Information | |
| RAID Support | NVMe RAID 0/1/10 and SATA RAID 0/1/10 via RAIDXpert2 |
| Integrated IO Shield | No |
BIOS Features | |
| UEFI BIOS | Yes |
| EZ Flash | Yes |
| OC Profiles | Yes |
Dimensions | |
| Height | 244 mm (9.6 in) |
| Width | 244 mm (9.6 in) |
| Net Weight | 0.755 kg (1.7 lbs) |
