User's Manual

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PRIME B250M-A specications summary
ASUS unique
features
EZ DIY
UEFI BIOS EZ Mode
- Featuring friendly graphics user interface
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
ASUS Quiet
Thermal
Solution
Quiet Thermal Design
- ASUS Fan Xpert 2+
- Stylish Fanless Design: PCH Heatsink
Rear panel I/O
ports
1 x PS/2 keyboard port (purple)
1 x PS/2 mouse port (green)
1 x DVI-D port
1 x RGB port
1 x HDMI port
1 x 5Gb/s USB Type C port
2 x USB 2.0/1.1 ports
2 x USB 3.0/2.0 ports (blue, Type A)
1 x LAN (RJ-45) port
3 x Audio jacks support 8-channel audio output*
* Use a chassis with HD audio module in the front panel to support an 8-channel
audio output.
Internal
connectors
1 x USB 3.0 / 2.0 connector supports additional 2 USB 3.0/ 2.0 ports (19-pin)
2 x USB 2.0 / 1.1 connectors support additional 4 USB 2.0/ 1.1 ports
6 x SATA 6.0 Gb/s connectors (gray)
2 x M.2 Socket 3 (for M Key, type 2242/2260/2280 devices)
1 x CPU fan connector (PWM mode only)
2 x Chassis Fan connectors (4-pin) for both 3-pin (DC mode) and 4-pin (PWM
mode) coolers control
1 x Front panel audio connector (AAFP)
1 x Speaker connector
1 x COM connector
1 x Chassis Intrusion header
1 x System panel connector
1 x Clear CMOS header
1 x S/PDIF Out header
1 x TPM connector
1 x LPT connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
BIOS features
128Mb Flash ROM, UEFI AMI BIOS, PnP, DMI3.0, WfM2.0, SM BIOS 3.0,
ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F6
Qfan Control, F3 My Favorites, Last Modied log, F12 PrintScreen, and ASUS
DRAM SPD (Serial Presence Detect) memory information
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