The motherboards' I/O panels feature a BIOS upgrade port with a one-click operation, a switch, and a clear CMOS button. The USB port array has been prioritized over audio ports to cater to the demand for higher USB connectivity.

Technical specifications for both models include an ATX form factor, 18+1+1 power phase design, four PCIe 4.0 x4 M.2 slots, and support for DDR5 memory with overclocking capabilities up to 7,000 MHz. Connectivity options include front and dual USB 3.2 Gen 2x2 ports, with the front header supporting Power Delivery 3.0 at 30W, and network connections via a Realtek 2.5G Ethernet port along with AX211/210 Wi-Fi 6E and Bluetooth 5.3.

The iGame Z790D5 Ultra V20 distinguishes itself with two 12V 4-pin RGB headers and holographic effects on the heatsinks, and the Flow V20 is notable for a shroud covering the second PCIe x16 slot.

Both Colorful motherboards do not match the six M.2 slot configuration found on the ASRock Phantom Gaming Z790 Nova WiFi motherboard. However, they support PCIe 4.0 M.2 slots, contrasting with ASRock's offering, which provides PCIe 5.0 bandwidth to one M.2 slot and reduces the primary PCIe x16 slot to x8 bandwidth when the M.2 slot is in use.

Colorful has made claims of a "410" high-quality service and after-sales support, though details are limited. The company lists features such as Dr. MOS 90A power phases, 30μm gold plating on DIMM and PCIe slots, alloy-reinforced DDR5 slots, tantalum capacitors, and a debug LED. However, these features are not all listed on the official website.

The reinforcement of the first PCIe x16 slot is not clearly defined in terms of structural support, and the absence of rear PCB images leaves this aspect uncertain. Additional information from Colorful is anticipated to provide these technical clarifications.