The manual would specify DDR3 support.
Identifying pins is a common challenge as they are often not clearly marked. Based on community findings , the layout follows this pattern: Pin Number Pin Number HDD LED (+) Power LED (+) HDD LED (-) Power LED (-) Reset Switch Power Switch Reset Switch Power Switch Acer Inc Ipisb-vr Rev 1.01 Manual
RAM InstallationFor dual-channel performance, install matching sticks of DDR3 memory in slots of the same color. If you are only using two sticks, use slots 1 and 3 (counting from the CPU outward). The manual would specify DDR3 support
If you are transplanting this board into a new case, or if you accidentally disconnected the wires while cleaning the computer, you are likely staring at a cluster of pins wondering: Acer Inc Ipisb-vr Rev 1.01 Manual