User Manual version 2.1
OPEN (660) 120/140/150
4-38
The OPEN (660) 120/140/150 II consists of a Celeron/
Pentium® III embedded little board with an adequate CPU
and relevant SDRAM on it. The system control board and
other internal devices such as expansion card, HDD and
power supply are already housed in a plastic rear cover.
The system’s performance depends on the installed CPU
and the capacity of the system memory and hard disk
drive. In some circumstances, you might intend to
upgrade or maintain the system. By removing the rear
cover and the metal covers, the internal components
such as CPU, SDRAM, HDD and power supply can be
easily accessed for maintenance and upgrade.