: 4 × DDR3 DIMM slots (Dual-channel, 1066/1333 MHz, non-ECC, up to 16GB or 32GB depending on BIOS) Expansion Slots : 1 × PCI Express x16 (Gen 2.0) 1 × PCI Express x1 2 × Legacy PCI Slots
The is a Micro-ATX (mATX) OEM motherboard manufactured by Pegatron for use in popular pre-built desktop systems, most notably the Acer Aspire M3970 , Acer Aspire M1930 , and the Gateway DX4860 . Because it was distributed exclusively within pre-built systems, finding an official standalone manual from the Acer Support Website can be remarkably difficult. Acer Inc Ipisb-vr Rev 1.01 Manual
Used for system beep codes. Pin 9 is Positive (+), Pin 11 is Negative (-). Clear CMOS Jumper (Resetting BIOS) : 4 × DDR3 DIMM slots (Dual-channel, 1066/1333