For networking, these motherboards are equipped with a WiFi 6E card and a Realtek RTL8125BG 2.5Gb Ethernet controller. The rear I/O panel offers a 10G Type-A port and a 10G Type-C port, with an additional 5G Type-A connector on the front panel. Video output options include an HDMI 2.1 TMDS (compatible with HDMI 2.0 standards) and a DisplayPort 1.4. The main distinction between the Z790I and the B760I models lies in the Z790I's inclusion of 20K long-life black capacitors and enhanced CPU overclocking capabilities. ASRock has emphasized the superior power supply design of these motherboards compared to similar ITX offerings, citing the inclusion of a composite VRM cooling module with a MOS fan to augment cooling efficiency.
Notably, the Z790I Lightning WiFi motherboard was used by overclocking enthusiast Splave to set four world records and achieve multiple first-place finishes in liquid nitrogen extreme overclocking competitions, demonstrating the motherboard's high-performance potential.
