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Asus X99-M WS


[ Rear Ports ][ Schematic ]

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The Asus X99-M WS is a small form factor Micro ATX motherboard built for the enthusiast Core i7 Haswell-E processor line. Like all boards based on the X99 chipset from Intel, it supports DDR4 memory in a quad-channel configuration - so for full performance, all four memory slots need to be filled with matching modules.

For external connectivity it boasts eight USB ports across a mix of USB 2.0, 3.0, and 3.1 standards. Digital and analog audio are included too, and for networking dual Gb Ethernet ports plus 802.11ac WiFi. Internally there are eight SATA 6Gbps ports and one M.2 slot for drives, as well as USB headers for front panel ports / devices and a connector for an optional trusted platform module (TPM). Three PCI-Express 3.0 slots are present, two running at x16 speed and one at x8, plus a PCI-Express 2.0 x1 slot.
William George (Product Development)
William George (Product Development) Says:
If you want a ton of processing power in a small package, this micro ATX motherboard allows use of both Core i7 and Xeon E5 processors - and with DDR4 ECC registered memory, up to 64GB of RAM! All of this, with some limits on CPU wattage, can fit in systems as small as our Peak Mini.
Jeff Stubbers (Technology Consultant Lead)
Jeff Stubbers (Technology Consultant Lead) Says:
This is an excellent MicroATX motherboard. This means it is a bit smaller than standard ATX motherboards so it can fit in a smaller case. However, this also means that it has a few less PCI-E expansion slots. So if you would like the capability to add more expansion cards (Firewire card, USB, RAID controller, or additional video cards) in the future, you may want to consider a standard ATX motherboard instead. The Asus X99 Deluxe also has 8 RAM slots for extra RAM expansion in the future, vs. 4 RAM slots on this motherboard.
Model: Asus X99-M WS

Socket  2011-3
CPU Compatibility  Intel Core i7 and Xeon Processors Family for the LGA 2011-3 Socket
Form Factor  MicroATX
Chipset Manufacturer  Intel
Chipset  X99
Front Side Bus  QuickPath Interconnect
Network Connectivity  Dual Gigabit Networking + 802.11 A/B/G/N/AC
Network Controller  Intel I210-AT, Intel I218LM
Audio Controller  Realtek ALC1150 8-Channel High Definition Audio CODEC featuring Crystal Sound 2
Cooling System  Heatsink
Color  Black
Memory Support
Type  DDR4 ECC Registered
Maximum Speed  2133 MHz
Number of Slots  4
Maximum Size per Slot  64 GB
Maximum Amount Supported  256 GB
External Connections
USB 2.0  2
USB 3.2 Gen 1 (USB 3.0)  4
USB 3.2 Gen 2 (USB 3.1)  2
PS/2 Keyboard  Yes
Audio Out  Surround Sound (7.1)
Audio In  Line-In/Microphone
S/PDIF  Optical
LAN (RJ45)  2
Wireless Antenna Port  Yes
Internal Connections
USB 2.0  2 (providing 4 ports)
USB 3.2 Gen 1 (USB 3.0)  1
SATA III 6.0Gbps  8
M.2 Connector  1
M.2 Support  M Key, type 2260/2280 storage devices support
Serial (Com)  1
TPM (module sold separately)  1
Compatible TPM  20-1
SATA Controllers
SATA III 6.0Gbps Controller 1  Intel X99
Expansion Slots
Slot 1  PCI Express 3.0 x16
Slot 2  PCI Express 2.0 x1
Slot 3  PCI Express 3.0 x16
Slot 4  PCI Express 3.0 x8 in a x16 size
Additional Information
SLI Compatible  Yes
Crossfire Compatible  Yes
RAID Support  0,1,5,10
Bluetooth  Yes (4.0)
Dual GPU Slot Spacing  2-Slot
BIOS Features
EZ Flash  Yes
Height  244 mm (9.6 in)
Width  244 mm (9.6 in)

-M.2 is PCI-E 2.0 x2
-When using a 28-lane CPU (Intel Core i7 5820K), the PCI-E slots are changed to:

Slot 1 PCI Express 3.0 x16
Slot 2 PCI Express 2.0 x4
Slot 3 PCI Express 3.0 x16 (x8 if slot 4 is used)
Slot 4 PCI Express 3.0 x4


3 Years

  • Asus X99-M WS Drivers
    • Chipset
      • Chipset.zip
        Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
    • Management Engine
      • MEI.zip
        Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
    • Intel RST
      • IRST.zip
        Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
    • Audio

      • Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
      • Audio_7727.zip
        Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
    • Intel USB 3.0
    • ASM USB 3.0
      • ASM_USB.zip
        Version Released 02/14/17
        For Win7_64, Win8_64
    • Intel LAN
      • LAN.zip
        Version Released 02/14/17
        For Win7_64, Win8_64, Win10_64
    • WLAN
      • WIFI.zip
        Version Released 09/01/15
        For Win7_64, Win8_64, Win10_64
    • Bluetooth
      • Bluetooth.zip
        Version Released 09/01/15
        For Win7_64, Win8_64, Win10_64
  • Asus X99-M WS Manual
  • Asus X99-M WS Firmware
  • Asus X99-M WS BIOS

Configure a custom computer with the Asus X99-M WS.