The H61H2-AD has no USB 3.0 headers or ports on the rear. You cannot add USB 3.0 front panels without a PCIe adapter card.
This document summarizes key information and practical instructions for the Acer H61H2-AD motherboard (LGA1155, Intel H61 chipset). It covers specifications, installation steps, BIOS setup, common troubleshooting, and maintenance—suitable as a concise user manual. acer h61h2ad manual top
Detailed schematics and layout maps for similar ECS versions can be found on The Retro Web or via Scribd's ECS H61H2-A Manual The H61H2-AD has no USB 3