User manual

ASMB-781 User Manual 10

CPU,SYSTEM fan PWM/DC mode selection(CPUFAN_SEL1, SYSFAN_SEL1)

The ASMB-781 contains a jumper that can support PWM or DC mode, Normally this

jumper should be set with pin 1-2 closed. If you want to change to DC mode, set

CPUFAN_SEL1, SYSFAN_SEL1 to 2-3 closed for disable.

PCIe x16 slot(slot6) switch(JCFG1)

The ASMB-781 contains a jumper that can assign PCI-E port (slot 6) to 1 x 16 link

(Default) or 2 x 8 link for riser card use. Normally this jumper should be set with pin 1-

2 closed. If you want to support riser card, set JCFG1 to 2-3 closed.

1.9 System Memory

ASMB-781 has four 240-pin memory sockets for DDR3 ECC/Non-ECC 1066/1333

MHz memory modules with maximum capacity of 32GB (Maximum 8GB for each

DIMM).

Please note that both versions ASMB-781 do NOT support registered DIMMs

(RDIMMs).

Table 1.8: (CPUFAN_SEL1, SYSFAN_SEL1)

Function Jumper Setting

*PWM mode 1-2 closed (add jumper diagram)

DC mode 2-3 closed (add jumper diagram)

Table 1.9: ATX/AT mode selector (PSON1)

Function Jumper Setting

AT Mode

* ATX Mode

* default setting

Table 1.10: PCIe x16 slot switch (JCFG1)

Function Jumper Setting

*1 x 16 link 1-2 closed (add jumper diagram)

2 x 8 link 2-3 closed (add jumper diagram)

1-2 closed

123

2-3 closed

123

Brand Size Speed Vendor PN Advantech PN ECC

Transcend

1GB 1333 MHz NA Yes

2GB 1333 MHz NA Yes

4GB 1333 MHz NA Yes

InnoDisk 4GB 1333 MHz NA Yes

Transcend

1GB 1333 MHz 96D3-1G1333NN-TR No

4GB 1333 MHz 96D3-4G1333NN-TR No