#Account Title#
Unsupported Browser Detected: Dear user, the browser you’re currently using is not supported by this website. Please click here for more information about the browsers we support and how to obtain them.

May receive a 4-2-3-3 post beep error when installing PCI-express video adapter - ThinkCentre S51 (type 8171, 8172, 8173), A51 (type 8424, 8425)


When the user installs a PCI-express video adapter in the machine they may receive a 4-2-3-3 post beep error.

Affected configurations

Any of the following systems configured with a PCI-e video adapter that is not PCI-e x1:

  • ThinkCentre S51 (type 8171, 8172, 8173)
  • ThinkCentre A51 (type 8424, 8425)

None. No hardware should be replaced for this. The system only supports PCI-Express x1. While the system riser card does have a standard PCI-express bracket that normally would support x1,x4,x8, and x16. The 8171,8172 and 8173 ships from manufacturing with a plastic bezel that covers everything except where a PCI-e x1 card would populate. The bezel is removable therefore it is possible for a user to insert a Non PCI-e x1 card and thus receive post error 4-2-3-3.



  • Alias ID: SF05-D0065
  • Document ID: HT035838
  • Last Updated :17 Jun 2014
  • © 2015 Lenovo