Foxconn P9657AA Manual page 18

Memory
This motherboard includes four 240-pin slots with 1.8V for DDR2. So You must
install at least one memory bank to ensure normal operation.
Installation of DDR2 Memory
1. There is only one gap near the center of the DIMM slot, and the memory
module can be fixed in one direction only. Unlock a DIMM slot by pressing the
module clips outward.
2. Align the memory module to the DIMM slot, and insert the module vertically
into the DIMM slot.
128 Pins
3. The plastic clips at both sides of the DIMM slot will lock automatically.
For the detailed memory support list on this motherboard, please visit the
website: http://www.foxconnchannel.com
Chapter 2 Installation Instructions
112 Pins
11