Panasonic Password Skipping Plug

From Laptops Wiki
Jump to navigationJump to search

The Panasonic Password Skipping Plug is an electrical connector that allows to bypass the BIOS password on certain Panasonic Toughbook computers. It requires a PS/2 connector (a port for an "old-school" keyboard or mouse) and a parallel port ("old-school" printer port).

From the service manual of Panasonic Toughbook CF-72 (Mark 1):

When "Enter password" is displayed, use "Password Skipping Plug" in order to skip the user password.

1) Connect the parallel plug to the parallel port.
2) Connect the PS/2 mouse plug to the mouse port.
3) Power on the computer.

The wiring of the parallel plug is described below.
Connect pins 2-5-6-8-11-13-15-18-19-20-21-22-23 to Shield GND (PS/2 mouse plug pin 3.)
Connect pins 3-4-7-9-10-12 to VC5 (PS/2 mouse plug pin 4) with 4.7KW each.

The Password Skipping Plug can be used for the CF-27[1], CF-29 (Mark 5)[2], CF-30[3] and CF-72 (Mark 1)[4] at least.

References[edit | edit source]

  1. ALLservice.ro forum thread about a CF-27
  2. Panasonic Toughbook CF-29N3LGZBM service manual, page 12
  3. ALLservice.ro forum thread about a CF-30
  4. Panasonic Toughbook CF-72 Mark 1 service manual, page 26