Does anyone know which com port you are suppose to select when attempting to update?

It depends on your PC, when you select the correct one the currently installed firmware version number will display on the bottom of the updater app

How is the audio source chosen for the optical out?

The optical output extracts audio for whichever input you set for output 1.

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OREI 2x2 HDMI Matrix Switch – 8K HDMI 2.1, EDID, IR, VRR, FVA, ALLM, HDR10+

Product ID: 473028338

Details

Brand
OREI
Cable Type
Fiber Optic
Color
Red
Compatible Devices
Projector
Connector Type
HDMI

🎮VRR & ALLM for Lag-Free Gaming

📺8K60 & 4K120 Ultra HD Support

🔊Dolby TrueHD & DTS-HD Master Audio

COP 628989

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎬 Elevate your entertainment setup to 8K brilliance — don’t just watch, experience!

GAMING OPTIMIZED - Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) ensure smooth, lag-free gameplay.
NEXT LEVEL VISUALS - Experience stunning 8K60 and 4K120 HDR10+ with Dolby Vision for cinema-grade clarity at home.
EFFORTLESS SWITCHING - 2x2 HDMI matrix with IR remote control lets you toggle between sources and displays without missing a beat.
SEAMLESS AUDIO MASTERY - Supports premium audio formats including Dolby TrueHD, DTS-HD Master Audio, and DSD for immersive sound.
GLOBAL READY RELIABLE - Dual voltage power supply with international adapter plus 1-year warranty for worldwide peace of mind.

The OREI 2x2 HDMI Matrix Switch is a cutting-edge 8K HDMI 2.1 device supporting up to 8K60 and 4K120 resolutions with HDR10+ and Dolby Vision. It features smart EDID management, IR remote control, and supports advanced audio formats like Dolby TrueHD and DTS-HD Master Audio. Designed for seamless switching between two HDMI inputs and outputs, it also includes gaming enhancements like VRR and ALLM. With dual voltage support and a 1-year warranty, it’s a versatile, reliable solution for professional-grade home entertainment and gaming setups.

Specifications

ASIN	B0BG3L9XCC
Audio Output Mode	Stereo, Dolby Digital, Dolby Digital Plus, Dolby True HD, DTS, DTS-EX, DTS-HD Master Audio, DSD
Best Sellers Rank	#265 in Audio & Video Selector Boxes
Brand	OREI
Cable Type	Fiber Optic
Color	Red
Compatible Devices	Projector, Television
Connector Type Used on Cable	HDMI
Customer Reviews	4.1 4.1 out of 5 stars (75)
Global Trade Identification Number	00850031132320
Item Weight	13.9 ounces
Manufacturer	OREI Products
Manufacturer Contact Information	[email protected]
Mfr Part Number	BK-202A
Model Number	BK-202A
Number of Items	1
Number of Packs	1
Number of Ports	3
Packer Contact Information	[email protected]
UPC	850031132320
Unit Count	4 Count
Warranty Description	1 Year Warranty

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