Mostlikely it is a Motorola SM 56k Modem...
but to be sure go to the DEVICE MANAGER, and expand the MODEM then check on the 'DETAILS' hardware PID, something like VEN_1057&DEV_3055...
Let us know the Vendor number and the DEVice number and we can or should be able to lead you to the right driver then...
PS: on some Laptops the MODEM is integrated in the HD-AUDIO chip and driver...
Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."