Like other Aorus branded models, the Z590 Aorus Pro AX follows GIGABYTE's typical black and gray color theme throughout, with an integrated thin RGB LED strip in the rear panel cover and M.2 heatsinks covering all the available slots. Included are three full-length PCIe slots with two operating at PCIe 4.0 x16 and x8/x8, with the third operating at PCIe 3.0 x4. Storage options include four M.2 slots, with two PCIe 4.0 x4 and two PCIe 3.0 x4/SATA M.2, as well as six SATA ports with support for RAID 0, 1, 5, and 10 arrays. The Z590 Aorus Pro AX includes four memory slots with support for DDR4-5000, with a maximum of up to 128 GB. GIGABYTE uses the latest Realtek ALC4080 HD audio codec, which powers the board's five 3.5 mm audio jacks and S/PDIF optical output. There's an Intel I225-V 2.5 GbE controller and an Intel AX200 Wi-Fi 6 CNVi with support for BT 5.0 devices for networking. There's also plenty of USB connectivity too, with one USB 3.2 G2x2 Type-C, four USB 3.2 G2 Type-A, four USB 3.2 G1 Type-A, and four USB 2.0 ports. Finishing off the rear panel is a single DisplayPort 1.2 video output.