J-bond Computer Systems Corp.

[PCI400C-C]

1,If you want to update the BIOS by flashing, you must have a flashable
  EPROM named MXIC 28F1000 (vpp=12v) and there are JP16 jumper pins on
  your PCI400C-C.

2,The jumper settings table for new AMD sl-enhanced write-back CPUs
  is as follows:

  JC1 JC2  JC3     JC4  JC6 JC8  JC9 JC10 JC11 JC12 JC13    JC14 JC15 Q5
  2-3 Open 1-2,3-4 Open 4-5 Open 2-3 3-4  4-5  1-2  1-2,3-4 1-2  1-2  Open

  JC7
  Short for AM5X86-133 (sl-enhanced, write-back, 3.45V)(4 times frequency)
  Open  for AM486DX4-100 or -120 (sl-enhanced, write-back, 3V)(3 times ..)

  JP3   JP4
  Short Short  for 100 or 133 MHz
  Open  Short  for 120 MHz

3,The jumper settings table for AMD sl-enhanced write-through DX4 CPUs
  is as follows:

  JC1 JC2  JC3     JC4  JC6 JC7  JC8  JC9 JC10 JC11 JC12 JC13    JC14 JC15 Q5
  2-3 Open 1-2,3-4 Open 4-5 Open Open 2-3 3-4  4-5  1-2  1-2,3-4 1-2  Open Open

  JP3   JP4
  Short Short  for 100 MHz
  
4,The jumper settings table for Intel/AMD standard DX2/DX4 CPUs
  is as follows:

  JC1 JC2  JC3  JC4  JC6  JC7  JC8  JC9  JC10 JC11 JC12 JC13    JC14 JC15
  2-3 Open Open Open Open Open Open Open 3-4  Open Open 1-2,3-4 Open Open

  JP3   JP4
  Open  Open   for DX-25, DX2-50, DX3-75 MHz
  Short Short  for DX-33, DX2-66, DX4-100 MHz
  
  Q5
  1-2,3-4,5-6  for CPU of 5V voltage
  Open         for CPU of 3V voltage

5,The jumper settings table for Intel sl-enhanced SX/SX2/DX/DX2/DX4 CPUs
  is as follows:

  JC1 JC2  JC3 JC4  JC6  JC7  JC8  JC9 JC10 JC11 JC12 JC13    JC14 JC15
  2-3 Open 3-4 Open Open Open Open 2-3 3-4  4-5  1-2  1-2,3-4 Open Open

  JP3   JP4
  Open  Open   for SX/DX-25, SX2/DX2-50, DX3-75 MHz
  Short Short  for SX/DX-33, SX2/DX2-66, DX4-100 MHz
  
  Q5
  1-2,3-4,5-6  for CPU of 5V voltage
  Open         for CPU of 3V voltage

6,The jumper settings table for Cyrix-5x86(M9) CPUs
  is as follows:

  JC1 JC2  JC3     JC4  JC6 JC7  JC8  JC9 JC10 JC11 JC12 JC13    JC14 JC15 Q5
  2-3 Open 1-2,3-4 Open 2-3 Open Open 2-3 3-4  2-3  1-2  1-2,3-4 1-2  Open Open

  JP3   JP4
  Short Short  for 100 MHz
  Open  Short  for 120 MHz

7,The jumper settings table for Cyrix-DX2,DX4 (M7) CPUs
  is as follows:

  JC1 JC2  JC3 JC4  JC6  JC7  JC8 JC9 JC10 JC11 JC12 JC13    JC14 JC15
  2-3 Open 2-3 Open Open Open 2-3 1-2 3-4  2-3  1-2  1-2,3-4 2-3  Open

  Q5
  1-2,3-4,5-6  for CPU of 5V voltage
  Open         for CPU of 3V voltage

  JP3   JP4
  Short Short  for DX2-66, DX4-100 MHz
  Open  Short  for DX2-80 MHz