The ASUS EXB660MV5 is a microATX motherboard designed for Intel's 12th Gen Core processors. Here are the detailed specifications:

CPU Support:

 Intel Socket LGA1700 for 12th Gen Intel Core, Pentium Gold, and Celeron Processors.

 It supports Intel Turbo Boost Technology 2.0 and Intel Turbo Boost Max Technology 3.0 (Support depends on CPU types).

Chipset:

 Intel B660 Chipset.

Memory Support:

 2 x DIMM slots, Max. 64GB, DDR4.

 Memory speeds: 5333(OC)/5000(OC)/4800(OC)/4600(OC)/.../2133 MHz.

 Dual Channel Memory Architecture.

 Supports Intel Extreme Memory Profile (XMP).

Graphics:

 1 x DSub port.

 1 x HDMI port (Supports 4K@60Hz as specified in HDMI 2.1).

 Graphics specifications may vary between CPU types.

Expansion Slots:

 1 x PCIe 4.0/3.0 x16 slot (for Intel 12th Gen processors).

 2 x PCIe 3.0 x1 slots.

Storage:

 Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports.

 M.2_1 slot (Key M) for Intel 12th Gen Processors (supports PCIe 4.0 x4 mode).

 M.2_2 slot (Key M) for Intel B660 Chipset (supports PCIe 4.0 x4 mode).

 4 x SATA 6Gb/s ports.

 Intel Rapid Storage Technology supports SATA RAID 0/1/5/10.

 Intel Rapid Storage Technology supports Intel Optane Memory H Series on PCH attached M.2 slots.

 Ethernet:

 1 x Realtek 1Gb Ethernet.

USB:

Rear USB (Total 6 ports):

 4 x USB 3.2 Gen 1 ports (TypeA).

 2 x USB 2.0 ports (TypeA).

Front USB (Total 6 ports):

 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports.

 2 x USB 2.0 headers support an additional 4 USB 2.0 ports.

 Audio:

 Realtek 7.1 Surround Sound High Definition Audio CODEC.

 Supports: Jackdetection, Multistreaming, Front Panel Jackretasking.

 It supports up to 24bit/192 kHz playback.

 Premium Audio capacitors, Audio Shielding, Dedicated Audio PCB layers.

 A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.

 Back Panel I/O Ports:

 4 x USB 3.2 Gen 1 ports (TypeA).

 2 x USB 2.0 ports (TypeA).

 1 x DSub port.

 1 x HDMI port.

 3 x Audio jacks.

 1 x Realtek 1Gb Ethernet port.

 1 x PS/2 Keyboard/Mouse combo port.

Internal I/O Connectors:

 Fan and cooling related:

 1 x 4-pin CPU Fan header.

 1 x 4-pin Chassis Fan header.

Power related:

 1 x 24-pin Main Power connector.

 1 x 8pin +12V Power connector.

Storage Related:

 2x M.2 slots (Key M).

 4 x SATA 6Gb/s ports.

USB:

 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports.

 2 x USB 2.0 headers support an additional 4 USB 2.0 ports.

Miscellaneous:

 1 x Clear CMOS header.

 1 x Front Panel Audio header (AAFP).

 1 x Speaker header.

 1 x 101 pin System Panel header.

Special Features:

 ASUS 5X PROTECTION III: DIGI+ VRM, LANGuard, Overvoltage Protection, SafeSlot Core+, StainlessSteel Back I/O.

 ASUS QDesign: QDIMM, QSlot.

 ASUS EZ DIY: ProCool.

 Nonstop Action: Lightning Boot.

 Nonstop Challenger: ASUS iCafe labs certified.

 Nonstop Durability: Luminous Antimoisture coating, USBGuard.

BIOS:

 128 Mb Flash ROM, UEFI AMI BIOS.

Manageability:

 WOL by PME, PXE.

Accessories:

Cables:

 2 x SATA 6Gb/s cables.

Miscellaneous:

 1 x I/O Shield.

 2 x M.2 Anchors.

Installation Media:

 1 x Support DVD.

Documentation:

 1 x User guide.

 Operating System:

 Windows 11 64bit, Windows 10 64bit.

 Form Factor:

 microATX (mATX) Form Factor.

 Dimensions: 9.6 inch x 8.3 inch (24.4cm x 21.1cm).