There are two DDR3 memory slots for up to 32GB of dual-channel memory and a PCI Express 3.0 x16 slot for a high-end graphics card.
In terms of storage connectivity, the EVGA Z77 Mini ITX is equipped with two each of SATA 6 Gb/s and SATA 3 Gb/s ports, and an mSATA 3 Gb/s slot wired to the Z77 PCH; and two eSATA 6 Gb/s driven by a Marvell-made controller. Display connectivity includes HDMI and mini-DisplayPort. High-bandwidth connectivity includes six USB 3.0 ports (four on the rear panel, two via headers), and two eSATA 6 Gb/s. 8+2 channel HD audio (Realtek ALC898 CODEC), gigabit Ethernet, Bluetooth, and a number of USB 2.0/1.1 ports make for the rest of the connectivity. The board is driven by UEFI BIOS.