After several days trying to get Windows 7 64 bit to connect to an SN10
via a USB to Serial adapter (Dynex), here is what finally worked great.

Posting this so folks don't have to go through discovery.

USB to Serial Adapter made by Keyspan (model USA-19HS) with Keyspan
Windows 7 driver.
SN10B with firmware 2.36
Windows 7 Home Premium (64bit)