If i have an hdmi and an sdi connection from two different sources plugged in, can i use my capture/streaming software to switch back and forth live?

No, only one input is active at a time. Consider getting two of the Black Magic Mini Recorder cards, with SDI and HDMI inputs. Connect one video source to each card, and those two inputs could be switched between or mixed in various programs like vMix, LiveStream Studio, and Wirecast.

If this is the bmd-bdlkhdextr4k12g card why is the picture showing the the older 6g card

We have sent a request to Amazon. The picture is now updated with the correct 12G Decklink card.

Will this fit in a 2U rack mount server?

Unfortunately, This card won't fit 2U chassis.

What slot does this need to be connected? I have to make sure the motherboard i buy as 1 that i can put this on.

Full specs here: https://www.blackmagicdesign.com/products/decklink/techspecs/W-DLK-25Requires PCI Express 8 lane Gen 2, compatible with 8 and 16 lane PCIe with HDMI or SDI mezzanine card.

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Blackmagic Design DeckLink 4K Extreme 12G Capture Card (BMD-BDLKHDEXTR4K12G)

Product ID: 15697999

Details

Brand
Blackmagic
Hardware Interface
PCI Express x8
Operating System
Windows Mac
Recommended Uses For Product
Video
Video Capture Resolution
4K

⚡12G Ultra-High Bandwidth

🔌PCIe x8 Interface

🖥️4K Capture & Playback

€ 2503.10

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎥 Capture the future in 4K — don’t get left behind!

TRUE 4 K RESOLUTION - Deliver stunning, crystal-clear visuals that elevate your content to cinematic quality.
BLAZING 12 G SDI SPEED - Experience seamless 4K video capture and playback with ultra-low latency.
PRO GRADE CONNECTIVITY - PCI Express x8 interface ensures lightning-fast data transfer and stability.
ADVANCED VIDEO PROCESSING - Supports up/down/cross conversions, 3D stereoscopic output, and genlock for flawless production.
CROSS PLATFORM POWERHOUSE - Compatible with Windows, Mac, and Linux for ultimate workflow flexibility.

The Blackmagic Design DeckLink 4K Extreme 12G is a professional-grade PCIe capture and playback card delivering true 4K resolution via 12G-SDI bandwidth. Compatible across Windows, Mac, and Linux, it supports advanced video features like up/down/cross conversions, 3D stereoscopic output, and genlock input, making it an essential tool for high-end video production and live broadcasting.

Specifications

ASIN	B00PE6YSQC
AV Output	4K
Antenna Location	Video
Best Sellers Rank	#282 in Internal TV Tuner & Video Capture Cards
Brand	Blackmagic Design
Compatible Devices	Personal Computer
Customer Reviews	4.2 4.2 out of 5 stars (14)
Global Trade Identification Number	09338716002881
Hardware Interface	PCI Express x8
Item Dimensions	9 x 6 x 6 inches
Item Weight	1.88 Pounds
Manufacturer	Blackmagic Design
Mfr Part Number	FBA_2881
Minimum System Requirements	Compatible Operating Systems: Windows, Mac, Linux; PCIe Gen2 slot required.
Model Name	FBA_2881
Model Number	FBA_2881
Operating System	Windows, Mac, Linux
Other Special Features of the Product	Up/down/cross conversions, 3D stereoscopic output, Mezzanine card design, Optical fiber modules, Genlock/tri-sync input
Platform	Linux, Mac OS X, Windows
Tuner Type	Analog, Digital
UPC	639476327139
Unit Count	1.0 Count
Video Capture Resolution	4K
Warranty Description	Limited Warranty

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€ 2503.10

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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5 days ago

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