The cheapest Cam Link clone you can buy actually works pretty well - The Verge
Elgato's Cam Link is a cheaper way to turn your HDMI camera into a webcam - The Verge
Amazon.com: Elgato Cam Link Pro, Internal Camera Capture Card with 4 HDMI inputs, Stream and Record 1080p60 or 4K30 for Video Conferencing, Teaching, Streaming, Broadcasting on OBS, Zoom, Teams with Multicam, PC :
Elgato Cam Link 4k Review - Turns any HDMI device into a webcam! - YouTube
Elgato Cam Link 4K Review
Elgato Cam Link Review | iReviews
Elgato Camlink 4K review: A high quality USB Video capture card for your live streams - Dignited
Elgato Cam Link 4K Review
Elgato Cam Link 4K (Standard Packaging) 10GAM9901 B&H Photo Video
Amazon.com: Elgato Cam Link 4K, External Camera Capture Card, Stream and Record with DSLR, Camcorder, ActionCam as Webcam in 1080p60, 4K30 for Video Conferencing, Home Office, Gaming, on OBS, Zoom, Teams, PC/Mac :
Elgato Cam Link 4K Review
Elgato Cam Link Pro PCIe camera capture card, 4 HDMI inputs, 1080p60 Full HD, 4K30, Multiview, streaming, OBS, Zoom Black 10GAW9901 - Best Buy