Advantech Industrial Mini-ITX Motherboard with DDR2/Dual GbE/PCI AIMB-221 - Manual (Page 21)

11 AIMB-221 User Manual
Chapter 1
H
ardware
C
onfiguration
1.10 System Memory
The AIMB-221 has two sockets for 200-pin dual inline memory modules (SODIMMs)
in two memory channels.
All these sockets use 1.8 V unbuffered double data rate synchronous DRAMs (DDR
SDRAM). They are available in capacities of 256, 512 1024 and 2048 MB. The sock-
ets can be filled in any combination with DIMMs of any size, giving a total memory
size between 256 MB and 4 GB.
1.10.1 CPU FSB and memory speed
The AIMB-221 can accept DDR2 SDRAM memory chips without parity. Also note that
the AIMB-221 accepts DDR2 533/667/800 MHz SDRAM. The AIMB-221 does not
support ECC (error checking and correction).
1.11 Memory Installation Procedures
To install DIMMs, first make sure the two handles of the DIMM socket are in the
"open" position. i.e. The handles lean outward. Slowly slide the DIMM module along
the plastic guides on both ends of the socket, and then press the DIMM module right
down into the socket, until you hear a click. This is when the two handles have auto-
matically locked the memory module into the correct position of the DIMM socket. To
remove the memory module, just push both handles outward, and the memory mod-
ule will be ejected by the mechanism in the socket.
1.12 Cache Memory
The AIMB-221 supports a CPU with one of the following built-in full-speed L2 caches:
! 1 MB for AMD Turion 64X2 TL-62 and TL56 CPUs,
! 512 KB for Mobile AMD Sempron 3700 + CPUs, and
! 256 KB for Mobile AMD Sempron 2100 + CPUs.
The built-in second-level cache in the processor yields much higher performance
than conventional external cache memories.
1.13 Processor Installation
The AIMB-221 is designed for AMD Mobile AMD Turion
TM
and Mobile AMD Sem-
pron
TM
(Socket S1g1) up to 2.1 GHz. Follow these steps to install the processor:
1. Turn the screw to loosen the processor socket.
2. Align the triangular marking on the processor with the small arrow on the corner
of the socket.
3. Turn the screw to its original position.
4. Install the heat sink on the CPU. The concave part of the heat sink should face
the capacitors to avoid contact with the capacitors.
Warning! Without a fan or heat sink, the CPU will overheat and cause damage to
both the CPU and the single board computer. To install a CPU, first turn
off your system.