HDMI, VGA, 4 x USB 2.0, RJ-45 LAN, and standard audio jacks (Line-in, Line-out, Mic). Front Panel Header Pinout
: 2 x SATA II (3.0 Gb/s) connectors for hard drives or SSDs. Acer Community Connectivity & I/O Ports Bypass 8GB RAM on motherboard H61H2 - AD (Aspire X3990)? Acer H61h2-ad Motherboard Manual
Often listed as DTX (approx. 200 x 244 mm) or Micro-ATX. HDMI, VGA, 4 x USB 2
The Acer H61H2-AD motherboard features a UEFI BIOS setup utility that allows you to configure various settings, including boot options, CPU settings, and power management. To access the BIOS setup utility, press the F2 key during boot-up. 4 x USB 2.0