Official documentation for the H61 chipset usually cites 16GB, but many Acer-specific configurations (like the Aspire X3990 ) may be limited to due to BIOS or hardware design. Expansion Slots: 1x PCIe x16 Gen 2.0 (for dedicated graphics). 1x PCIe x1. 2x or 4x SATA II 3Gb/s connectors (varies by revision). The Retro Web Connector & Jumper Guide
If you are searching for the , you likely own a legacy Acer desktop—such as the Aspire TC-605, AM3920, or the Veriton M series—or you have salvaged this micro-ATX board for a budget PC build. Released during the Intel Sandy Bridge (2nd gen) and Ivy Bridge (3rd gen) era, the H61H2-AD is a reliable but proprietary workhorse. Acer H61h2-ad Motherboard Manual