Asus PRIME B250M-A/CSM desktop alaplap

Intel® Socket 1151 for 7^th/6^th Generation Core™ i7/Core™ i5/Core™ i3/Pentium®/Celeron® Processors 
Supports Intel® 14 nm CPU
Supports Intel® Turbo Boost Technology 2.0 
* The Intel® Turbo Boost Technology 2.0 support depends on the CPU types.
* Refer to www.asus.com for CPU support list

Intel® B250

4 x DIMM, Max. 64GB, DDR4 2400/2133 MHz Non-ECC, Un-buffered Memory 
Dual Channel Memory Architecture 
Supports Intel® Extreme Memory Profile (XMP)
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
* Due to Intel® chipset limitation, DDR4 2400MHz memory frequency is only supported by 7th Generation Intel® processors. Higher memory modules will run at the maximum transfer rate of DDR4 2400MHz.
** Due to Intel® chipset limitation, DDR4 2133MHz and higher memory modules on 6th Generation Intel® processors will run at the maximum transfer rate of DDR4 2133MHz.

Integrated Graphics Processor- Intel® HD Graphics support 
Multi-VGA output support : HDMI/DVI-D/RGB ports 
- Supports HDMI with max. resolution 4096 x 2160 @ 24 Hz / 2560 x 1600 @ 60 Hz
- Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz
- Supports RGB with max. resolution 1920 x 1200 @ 60 Hz
Maximum shared memory of 1024 MB
Supports Intel® InTru™ 3D, Quick Sync Video, Clear Video HD Technology, Insider™
Supports up to 3 displays simultaneously

1 x PCIe 3.0/2.0 x16 (x16 mode, gray) 
2 x PCIe 3.0/2.0 x1

Intel® B250 Chipset : 
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)*¹
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (x4 PCIE mode)*²
Intel® Optane™ Memory Ready *³

Realtek® RTL8111H, 1 x Gigabit LAN Controller(s)
ASUS LAN Guard

Realtek® ALC887 8-Channel High Definition Audio CODEC 
- Supports : Jack-detection, Front Panel Jack-retasking
Audio Feature :
- LED-illuminated design - Brighten up your build with the gorgeous illuminated audio trace path.
- Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference
- Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals
- Premium Japanese audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity

Intel® B250 Chipset : 
1 x USB 5Gb/s port(s) port(s) (1 at back panel, , Type-C, Support 3A power output)
Intel® B250 Chipset : 
4 x USB 3.0/2.0 port(s) (2 at back panel, blue, Type-A, 2 at mid-board)
Intel® B250 Chipset : 
6 x USB 2.0/1.1 port(s) (2 at back panel, black, 4 at mid-board)

ASUS 5X Protection III :
- ASUS SafeSlot Core: Fortified PCIe Slot prevents damage
- ASUS LANGuard: Protects against LAN surges, lightning strikes and static-electricity discharges!
- ASUS Overvoltage Protection: World-class circuit-protecting power design
- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!
- ASUS DIGI+ VRM: 6 Phase digital power design
ASUS EPU :
- EPU 
ASUS Exclusive Features :
- AI Suite 3
- Ai Charger 
- ESD Guards
- ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface 
ASUS Quiet Thermal Solution :
- Stylish Fanless Design Heat-sink solution
- ASUS Fan Xpert 2+
ASUS EZ DIY :
- ASUS CrashFree BIOS 3 
- ASUS EZ Flash 3 
- ASUS UEFI BIOS EZ Mode
ASUS Q-Design :
- ASUS Q-DIMM 
M.2 Onboard(The latest transfer technologies with up to 32Gb/s data transfer speeds)

1 x PS/2 keyboard (purple)
1 x PS/2 mouse (green)
1 x PS/2 keyboard/mouse combo port(s)
1 x DVI-D
1 x D-Sub
1 x HDMI
1 x LAN (RJ45) port(s)
1 x USB 5Gb/s port(s) Type-C ( support 3A power output ) 
2 x USB 3.0 (blue) Type-A 
2 x USB 2.0 
3 x Audio jack(s)

1 x USB 3.0 connector(s) support(s) additional 2 USB 3.0 port(s) (19-pin)
2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
1 x M.2 Socket 3 with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)
1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (PCIE 3.0 x 4 mode)
1 x TPM header
1 x LPT header
1 x COM port(s) connector(s)
6 x SATA 6Gb/s connector(s)
1 x CPU Fan connector(s) (1 x 4 -pin)
2 x Chassis Fan connector(s) (2 x 4 -pin)
1 x S/PDIF out header(s)
1 x 24-pin EATX Power connector(s)
1 x 4-pin ATX 12V Power connector(s)
1 x Front panel audio connector(s) (AAFP)
1 x Chassis Intrusion connector(s)
1 x System panel connector

User's manual
I/O Shield
2 x SATA 6Gb/s cable(s)
2 x M.2 screws
1 x Supporting DVD

128 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI3.0, WfM2.0, SM BIOS 3.0, ACPI 6.0, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F6 Qfan Control, F3 My Favorites, Last Modified log, F12 PrintScreen, and ASUS DRAM SPD (Serial Presence Detect) memory information

WfM 2.0, DMI 3.0, WOL by PME, PXE

Drivers
ASUS Utilities
ASUS EZ Update 
Anti-virus software (OEM version)

Windows® 10 64-bit
Windows® 8.1 64-bit *⁴
Windows® 7 32-bit *⁴
Windows® 7 64-bit *⁴

mATX Form Factor 
9.6 inch x 8.1 inch ( 24.4 cm x 20.6 cm )

*1 When a device in SATA mode is installed on the M.2_1 socket, SATA_1 port cannot be used.
*2 Only M.2_2 socket can support Intel® Optane™ Memory. 
*3 Intel® Optane™ Technology is only supported when using 7th Generation Intel® processors. Before using Intel® Optane™ memory modules,ensure that you have updated your motherboard drivers and BIOS to the latest version from ASUS support website.
*4 Windows® 8.1 64-bit and Windows® 7 32 / 64-bit are only supported when using 6th Generation Intel® Processors