939A785GMH 128M 4 RAM Module funktionieren nicht

939A785GMH/128M motherboard provides four 184-pin DDR (Double Data
Rate) DIMM slots, and supports Dual Channel Memory Technology. For dual
channel configuration, you always need to install identical (the same brand,
speed, size and chip-type) DDR DIMM pair in the slots of the same color. In other
words, you have to install identical DDR DIMM pair in Dual Channel A (DDR1
and DDR2; Blue slots; see p.12 No.6) or identical DDR DIMM pair in Dual Chan-
nel B (DDR3 and DDR4; Black slots; see p.12 No.7), so that Dual Channel Memory
Technology can be activated. This motherboard also allows you to install four
DDR DIMMs for dual channel configuration, and please install identical DDR
DIMMs in all four slots. You may refer to the Dual Channel Memory Configuration
Table below.
[...]
For the configuration (3), please install identical DDR DIMMs in all four slots.

Buffalo Select
DD4002-S512/BJ
PC3200U-25330-A1
512 MB 400 MHz CL2.5
64 M x 64 DDR SDRAM
NonECC Unbuffered
Assembled in Taiwan
S/M: 80904

Alle Angaben sind auf allen 4 Modulen identisch.