LMP by Cropmark USB-C Attach Hub 7Port for iMac - MJSOFT (mjsoft.co.jp)
USB-C Clamp Hub iMac 24" (2021) Silver - Brands
Ansteckbarer USB-C-Hub für den M1-iMac » Sir Apfelot
Satechi Launches New USB-C Clamp Hub for M1 iMac - MacRumors
Hagibis iMac Hub with 4K@60Hz HDMI, USB C 3.1, USB 3.0 Ports and SD/Micro SD Card Reader, USB-C Clamp Hub USB C Docking Station for 2021 iMac 24 inch (with HDMI) : Electronics