Dell Optiplex 740 Motherboard Diagram -

: 5-pin connectors for the CPU fan ( FAN_CPU ) and system chassis fans.

CMOS Jumper -> Near the SATA ports, close to the bottom edge of the board. It is usually yellow or blue. Dell Optiplex 740 Motherboard Diagram

: Four slots supporting dual-channel DDR2 SDRAM , typically up to a maximum of 8GB or 16GB depending on specific BIOS and module density. Expansion Slots : : 5-pin connectors for the CPU fan (

Note: The SFF board uses a proprietary Dell heatsink and fan shroud. Do not lose the air duct. : Four slots supporting dual-channel DDR2 SDRAM ,

Whether you are trying to diagnose a "no POST" error, looking to upgrade the RAM to the maximum capacity, or hunting for the elusive CMOS reset jumper, understanding the is essential. Without a map of the board, you are working in the dark.