System Installation
ROBO-8777VG2A User’s Manual
3-3
Precaution! (See fig.3-3) Don’t touch directly by your hand or impacts internal align
balls of CPU socket to avoid motherboard destruction, it is a precise actuator.
3) Push down the lever to lock processor chip into the socket once CPU fits.
4) Follow the installation guide of cooling fan or heat sink to mount it on CPU
surface and lock it on the LGA 775.
Removing CPU
1) Unlock the cooling fan first.
2) Lift the lever of CPU socket outwards and upwards to the other end.
3) Carefully lifts up the existing CPU to remove it from the socket.
4) Follow the steps of installing a CPU to change to another one or place handling
bar to close the opened socket.
Configuring System Bus
ROBO-8777VG2A series will automatically detect the CPU used. CPU speed of Intel
®
Pentium
®
D can be detected automatically.
3.2 Main
Memory
ROBO-8777VG2A provides two DDR2-SDRAM DIMM sockets to support dual-
channel & single channel DDR2 memory interface. The maximum memory size can
be up to 4 GB, memory frequency includes 1066/800/667/533. Auto detects memory
clock, which is according to BIOS CMOS settings.
For system compatibility and stability, do not use memory module without brand.
Memory configuration can be either one double-sided DIMM in either one DIMM
socket or two single-sided DIMM in both sockets.
Watch out the contact and lock integrity of memory module with socket, it will
impact on the system reliability. Follow normal procedures to install memory
module into memory socket. Before locking, make sure that all modules have been
fully inserted into the card slots.
Dual Channel DDR2 DIMMs
Dual Channel DDR2 memory technology doubles the bandwidth of memory bus.
Adequate or higher bandwidth of memory than processor would increase system
performance. To enable Dual Channel DDR2 memory technology, install two
identical memory modules in both memory sockets is required. Following tables
show bandwidth information of different processor and memory configurations.
