What kind of capture card can I put on this motherboard and how many capture cards can I install? For example, one 4K Elgato Pr and One Blackmagic Capture card? I have a graphics card in it already but wondering where I can put the capture cards>?

You know the names of the cards but have no idea what interface they use? I think you should look at pictures and actually read descriptions. You will find your answers if you take the time to read and look. The motherboard has 4 pcie slots. Your video card is using one. Depending on the size of your other cards you can use up to 3..

Does the USB C (AKA thunderbolt port) actually work? Several models of ASUS ROG laptops the port doesn't work because ASUS didn't develop drivers to enable it. Did they develop drivers for their desktop motherboard line?

Technically speaking, this is NOT a TB3 port... I know it might look like one but the specs specifically list a usb3.1 gen 2 type c connector... NOT a thunderbolt port. If it were a Thunderbolt port, it would have to be listed as such. Just because it shares the same connection interface as USB C, does not mean every USB C is Thunderbolt. There are ASUS MOBOs that do in fact have a thunderbolt(gen I-III) port built in. However, they USUALLY denote these models with the iconic lightning bolt icon.

Hello, Thank you for contacting us in regards to your question. You can indeed use 8 SSDs with this ASUS X399 motherboard. Thank you, Newegg Support

Is this an upgrade from the normal Zenith Extream? Does it have the good or bad processor latch?

Have no idea for the item your saying but my latch works just fine. Asus support on the other hand is another topic.

Does this board support SR-IOV?

Hello, Thank you for contacting us in regards to your question. None of the provided materials for this motherboard appear to denote SR-IOV support. For more detailed information, we would suggest reaching out to ASUS directly. Thank you, Newegg Support

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ASUS ROG Zenith Extreme Alpha X399 HEDT Gaming Motherboard AMD Threadripper 2 (TR4) EATX DDR4 M.2 10G LAN USB 3.1 Gen2

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Powered by AMD Ryzen Threadripper 2 (TR4) processors to maximize connectivity and speed with support for up to 128GB of DDR4 memory, three NVMe M.2 drives and front panel USB 3.1 Gen2
5-Way Optimization featuring Auto-Tuning and FanXpert 4 provides automatic overclocking profiles for maximum OC performance
Built for high performance networking featuring onboard Aquantia 10G LAN, Intel gigabit LAN and ASUS LANGuard and GameFirst V technologies
ROG DIMM.2 allows for expansion of 2 M.2 SSDs and has two heatsinks to prevent throttling
Full customization with a 1.3" LiveDash OLED and ASUS Aura Sync RGB lighting via two addressable headers and one RGB header

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

Overview

Specs

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Model
Brand	ASUS
Series	ROG
Model	ZENITH EXTREME ALPHA

Supported CPU
CPU Socket Type	sTR4
CPU Type	AMD SocketTR4 for 1st and 2nd Gen AMD Ryzen Threadripper Processors * Refer to www.asus.com for CPU support list.

Chipsets
Chipset	AMD X399

Memory
Number of Memory Slots	8x288pin (DDR4)
Memory Standard	DDR4 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2933(O.C.)/ 2800(O.C.)/ 2666/ 2400/ 2133 MHz ECC and non-ECC, Unbuffered memory* * Please refer to Memory QVL (Qualified Vendors List) for details.
Maximum Memory Supported	128GB
Channel Supported	Quad Channel

Expansion Slots
PCI Express 3.0 x16	4 x PCIe 3.0 x16 Safeslots (supports x16, x16/x16, x16/x8/x16, x16/x8/x16/x8 modes)
PCI Express x4	1 x PCIe 3.0 x4 slot

Storage Devices
Serial ATA (SATA)	8 x SATA 6Gb/s
M.2	1 x DIMM.2 Module supports - 2 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 (support PCIe 3.0 x4 and SATA modes) 1 x M.2 Socket 3 with M Key, type 2242/2260/2280 (supports PCIe 3.0 x4 mode)* * When the M.2 Socket 3 on board is operating in PCIe mode, PCIe 3.0 x16_4 will runs at x4 mode. * Supports PCIE RAID configurations via onboard M.2 storages.

Onboard Audio
Audio Chipset	ROG SupremeFX High Definition Audio CODEC S1220
Audio Channels	8 Channels * Due to limitations in HDA bandwidth, 32-Bit / 192 kHz is not supported for 8-Channel audio.

Onboard LAN
LAN Chipset	AQUANTIA AQC107
Second LAN Chipset	Intel I211-AT
Max LAN Speed	10Gbps + 1Gbps
Wireless LAN	Intel Wireless-AC 9260 2x2 MU-MIMO 802.11 a/b/g/n/ac support dual frequency band 2.4/5 GHz Up to 1.73 Gbps transfer speed Supports channel bandwidth: HT20/HT40/HT80/HT160
Bluetooth	Bluetooth v5.0

Rear Panel Ports
RJ45	1 x Aquantia AQC-107 10G LAN port 1 x Anti-surge LAN (RJ45) port
USB 3.1	8 x USB 3.1 Gen1 ports [blue] 3 x USB 3.1 Gen2 ports (3 x Type-A [red])
USB Type-C	1 x USB 3.1 Gen2 port (1 x Type-C [black])
S/PDIF Out	1 x Optical
Audio Ports	5 x LED-illuminated audio jacks

Internal I/O Connectors
Onboard USB	1 x USB 3.1 Gen2 Type-C front panel connector 2 x USB 3.1 Gen1 header supports additional 4 USB 3.1 Gen1 ports 2 x USB 2.0 header supports additional 4 USB 2.0 ports
Other Connectors	1 x 4-Pin CPU fan connector 1 x 4-Pin CPU_OPT fan connector 1 x 4-Pin H_AMP Fan connector 1 x 4-Pin W_PUMP+ connector 2 x 4-Pin Chassis fan connectors 1 x 4-Pin HS fan connector 2 x Thermal sensor connectors 1 x EZ Plug connector (4-pin Molex power connector) 1 x W_PUMP+ 1 x W_IN header 1 x W_OUT header 1 x W_FLOW header 1 x WB_SENSOR header 2 x Aura RGB headers 2 x Aura Addressable headers 1 x Front panel audio connector (AAFP) 1 x Start button 1 x Reset button 1 x Safe Boot button 1 x ReTry button 1 x Slow mode Switch 1 x RSVD switch 1 x NODE connector 1 x LN2 mode jumper 1 x BIOS Switch button 7 x ProbeIt Measurement Points 1 x TPM connector 1 x Speaker header 1 x System panel connector

Physical Spec
Form Factor	Extended ATX
LED Lighting	RGB
Dimensions (W x L)	12.0" x 10.9"
Power Pin	1 x 24-Pin EATX power connector 2 x 8-Pin EATX 12V power connectors

Features
Features	Multi-GPU: Supports NVIDIA 3-Way/Quad-GPU SLI Technology Supports AMD 3-Way/Quad-GPU CrossFireX Technology ROG Exclusive Features: Extreme Engine Digi+ - MicroFine Alloy Choke - PowIRstage IR3555 MOSFETs - 10K Black Metallic Capacitors Start Button Retry Button Extreme Tweaker ROG Aluminum heatsink cover LN2 Mode ProbeIT ROG Exclusive Software - Mem Tweakit - RAMCache III - CPU-Z - GameFirst V - Sonic Studio III + Sonic Studio Link - Sonic Radar III Special Features: AURA - Aura Lighting Control - Aura RGB Strip Headers - Aura Addressable Strip Headers - Aura Lighting Effects Synchronization with compatible ASUS ROG devices ASUS Dual Intelligent Processors 5 - 5-way Optimization tuning key perfectly consolidates TPU, EPU, DIGI+ Power control, Fan Xpert 4, and Turbo app ASUS Exclusive Features - OptiMem II - Pre-mounted I/O shield - ASUS NODE: hardware control interface - AI Suite 3 - USB BIOS Flashback - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS C.P.R. (CPU Parameter Recall) - LiveDash - Ai Charger - BUPDATER - Armoury Crate - Clear CMOS Button - Reset Button ASUS Q-Design - Q-Connector - Q-DIMM - Q-Code - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) BIOS: 2 x 128MB Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS 3.0, ACPI 6.1 Manageability: WOL , PXE Support USB contents: Overwolf Anti-Virus software (1-year full subscription) Daemon Tools Software WinRAR Operating System Support: Windows 10 64-bit

Packaging
Package Contents	ROG ZENITH EXTREME ALPHA 1 x User's manual 1 x USB drive with utilities and drivers 1 x ROG DIMM.2 with heatsink 1 x SLI HB Bridge (2-way-M) 3 x 2-in-1 SATA 6Gb/s cables 1 x 2-in-1 ROG weave SATA 6G cable 3 x M.2 Screw Package 1 x 3-in-1 thermistor cable 1 x Q-Connector 1 x ROG Coaster 1 x ROG big sticker 1 x Extension Cable for RGB strips (80cm) 1 x Extension cable for Addressable LED 1 x ASUS 2x2 dual band Wi-Fi antennas 1 x Dual function screwdriver 1 x ROG logo plate sticker 1 x ROG Thank you Card 1 x 2-in-1 Rubber pad Fan Extension Card II: 1 x Fan Extension Card II 1 x Fan Extension Card II power cable 1 x Fan Extension Card II NODE connector cable 1 x Fan Extension Card II screw package 1 x Fan Extension Card II user manual

Additional Information
First Listed on Newegg	June 17, 2026

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ASUS ROG Zenith Extreme Alpha X399 HEDT Gaming Motherboard AMD Threadripper 2 (TR4) EATX DDR4 M.2 10G LAN USB 3.1 Gen2

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