System TS-639 Pro SS-839 Pro
CPU
Intel Atom processor
(1.60 GHz)
Intel Atom processor
(1.60 GHz)
Memory 1GB DDR2 2GB DDR2
Flash 128MB (IDE DOM) 128MB (IDE DOM)
CPU replaceable No No
Memory replaceable
Compatible with DDR2 667
DRAM
Can be upgraded to max
2GB
Compatible with DDR2 667
DRAM
Can be upgraded to max 2GB
Number of SODIMM slots 1 1
Number of hard drive slots 6 8
System TS-509 Pro
TS-809 Pro,
TS-809U-RP
CPU
Intel Celeron processor
(1.60 GHz)
Intel Core 2 Duo processor (2.80
GHz)
Memory 1GB DDR2 2GB DDR2
Flash 128MB (IDE DOM) 128MB (IDE DOM)
CPU replaceable Yes Yes
Memory replaceable
Compatible with DDR2 667
DRAM
Can be upgraded to max 4GB
Compatible with DDR2 667
DRAM
Can be upgraded to max 4GB
Number of SODIMM slots 2 2
Number of hard drive slots 5 8
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