The rear I/O panel is where the gap between these two boards becomes most dramatic. The Maxsun iCraft B860M Cross Pro delivers 8 USB 3.2 Gen 2 (10Gbps) Type-A ports alongside a Thunderbolt 4 port and a USB 4 40Gbps Type-C connector — a rear panel lineup that rivals boards at significantly higher price points. The Asus B850M AYW Gaming Wi-Fi, by contrast, offers a more modest mix of 2 USB 3.2 Gen 2 and 2 USB 3.2 Gen 1 ports, supplemented by 4 USB 2.0 ports. Those legacy USB 2.0 connections are adequate for keyboards and mice, but they represent a step back in a port layout where fast-transfer slots are at a premium.
Beyond raw USB count, the Maxsun's inclusion of Thunderbolt 4 is a standout differentiator. Thunderbolt 4 supports daisy-chaining peripherals, connecting external GPUs, and driving high-resolution displays — all over a single cable. It also adds a DisplayPort output, giving users a second video-out option alongside HDMI, which matters for multi-monitor setups using integrated graphics. The Asus has no USB-C on its rear panel at all and no DisplayPort, limiting display and high-speed device flexibility considerably.
The Maxsun iCraft B860M Cross Pro wins this category decisively. Its rear I/O is faster, more versatile, and more future-proof in virtually every dimension — more high-speed USB-A ports, Thunderbolt 4, USB 4, USB-C, and an extra video output. The Asus is not poorly equipped in absolute terms, but against the Maxsun's rear panel, it caters to users with simpler peripheral needs and tighter budgets.