Type-C Clamp Hub Pro | iMac Expansion Adapter - Satechi
Amazon.com: Satechi Aluminum Type-C Clamp Hub Pro with USB-C Data Port, USB-A 3.0 Data, Micro/SD Card Reader - Compatible with 2020/2019/2017 iMac & iMac Pro, Does Not Fit 2021 iMac (Space Gray) :
Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
Anker 535 USB-C Hub (5-in-1, for iMac) - Anker US
Amazon.com: Anker 535 USB C Hub (5-in-1), with 2 USB-A 10 Gbps Data Ports, USB-C 10 Gbps Port, SD and microSD Card Reader, for iMac Pro / iMac 24 inch 2021 / iMac 27 inch / 21.5 inch : Electronics
Sabrent HB-SIMC Multi-Port USB 3.0 iMac Hub at MacSales.com
Amazon.com: USB C 3.2 SSD Enclosure for 12+16 Pin MacBook SSDs for MacBook Pro 2013-2015, iMac 2013-2015, MacBook Air 2013-2017, Portable Aluminum SSD Adapter with Adjustable Indicator for MacBook SSD : Electronics
Apple 27" iMac with Retina 5K Display (Mid 2017) Z0TR-MNED43-BH
Take a tour of iMac Pro - Apple Support
USB C Hub, 7-in-1 USB C Adapter with 100W Power Delivery Charging Port
USB-C Clamp Hub for 24-inch iMac
USB-C and Thunderbolt: Understanding Ports and Cables for Macs and iPads - The Mac Security Blog
Charging MacBook (Pro) with Thunderbolt 3 ports on iMac 2017 | MacRumors Forums
Amazon.com: Satechi Aluminum Type-C Clamp Hub Pro with USB-C Data Port, USB-A 3.0 Data, Micro/SD Card Reader - Compatible with 2020/2019/2017 iMac & iMac Pro, Does Not Fit 2021 iMac (Silver) :
iMac (21.5-inch, 2017) - Technical Specifications
Satechi Aluminum Type-C Clamp Hub Pro - Walmart.com