StayGo replaces nearly all the connections missing from the new USB-C Only iMac! That includes Ethernet - you to consider the entry cost iMac - vs the higher priced iMac with the Ethernet power adapter.
eBay
PULWTOP 4-Port USB C Hub, 10Gbps Data Transfer, Multiport Adapter for MacBook Pro, Chromebook, iMac, XPS, Type-C Laptops.
Aliexpress UK
1X 4K HDMI, supports up to 4K / 3840x2160 @30Hz. 7 in 1 Type C to HDTV Adapter Hub 4K. for MacBook Pro Air iMac iPad Pro USB 3.0. 4K HDMI Image Transmission. This USB C adapter's HDMI port can extend or mirror your host's screen to compatible monitors, HDTV, and projectors for high-resolution display up to 4K@30Hz.
eBay
IMac USB-C Hub Multiport Adapter, Aluminium Type-C Clam Hub Pro. Featuring a USB-C data port, three USB-A 3.0 data ports, and micro/SD card reader slots, the USB-C Clamp Hub upgrades your iMac functionality while maintaining a sleek aesthetic.
eBay
6 in 1 Type C to HDTV Adapter Hub 4K. 1X 4K HDMI. Extend your laptop's screen with high-definition visuals, maximizing productivity and creativity. Mirror or extend the screen of a Type C device to an HDTV, monitor, or projector with a HDMI output.
eBay
New Portable Carbon Monoxide CO Detector Temp Humid Indoor Air Quality Alarm. Material: aluminum alloy + braided cable. Bulletproof cotton silk TPE soft wire body selection of harsh materials, softer, tugging, bending is not bad, to extend the service life.
eBay
SSD is easy to install, and the iMac adapter external solid state enclosure adapter supports 2242/2260/2280 M.2 SSD(Max,2TB). The iMac hub supports SD/TF simultaneous reading and writing, plugging and unplugging between all interfaces will not be affected.
eBay
Interface type USB 3.0. fearture 1 USB C HUB. fearture 2 USB TYPE C HUB. fearture 4 hub usb c. fearture 5 usb hub. ●Buckle design, which can be clamped at the edge of the display screen or desktop, does not occupy desktop space, and the buckle design is stable and stylish.
eBay
SSD is easy to install, and the iMac adapter external solid state enclosure adapter supports 2242/2260/2280 M.2 SSD(Max,2TB). The iMac hub supports SD/TF simultaneous reading and writing, plugging and unplugging between all interfaces will not be affected.
eBay