visca cables?

[JB Gallagher]

Hello all,

Could anyone out there tell me what the "Visca cables" on the product
list are for? There advertised at http://catalog.blackbox.com as Mac to
PC Interconnect cables, and by the picture shown there it looks like a
cable with a female serial connection on one end and a female PS/2
connection at the other end. If these are absolutely essential does
anyone know another place to get them besides blackbox?

--Brad Gallagher
ASCI Flash Center
jbgallag at flash.uchicago.edu