That release is 24 bugs earlier.  Takes too much time to explain them all.  Most significant change for A10 is windows 10 support.

X51  R2

Intel® H87 Chipset (Intel® DH82H87 PCH)"Shark Bay"


DDR3 PC3-12800 NON-ECC (1600 MHz)

Minimum: 4Gb
Maximum: 16Gb

2x 240-Pin DDR3 SDRAM Slots for use with the following configurations:

    4Gb (2x2 Gb DIMMS)
    6Gb (1x2 Gb 1x4GB DIMMS)
    8Gb (2x4 Gb DIMMS)
    16Gb (2x8 Gb DIMMS)

Realtek Integrated 10/100/1000 Gigabit Network Card

Half mini-PCIe Slot for use with:

    DW 1506 802.11 b/g/n Wi-Fi Wireless LAN
    DW 1550 802.11 b/g/n/ac Wi-Fi + Bluetooth Wireless Combo
    Killer NIC 1420 Wireless LAN (Retired)
    Killer NIC 1202 Wireless LAN (Retired)

Integrated Realtek ALC892 Codec

    5.1/7.1 Support
    Digital S/PDIF


Integrated Graphics

Intel HD Integrated Graphics model varies depending on your processor model:

Intel HD 4400

    Intel® Core™ i3-4150

Intel HD 4600

    Intel® Core™ i5-4430
    Intel® Core™ i5-4460
    Intel® Core™ i7-4770
    Intel® Core™ i7-4790

Category: BIOS

Type: BIOS

Description	Supported OS	Download
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS Windows 8 64-bit WB64A Windows 7 64-bit
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS Windows 7 64-bit WB64A Windows 8 64-bit
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	Windows 8 64-bit WB64A BIOS Windows 7 64-bit
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	Windows 8 64-bit WB64A BIOS Windows 7 64-bit
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS
Alienware X51 R2 This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS
Alienware X51 R2 System BIOS This package provides the BIOS Update on Alienware X51 R2 system BIOS running the following Operating Systems: Windows and DOS.More details	BIOS
Andromeda R2 system BIOS Please use the auto-execute file to flash or use the FPT to flash it.More details	BIOS