Since the NM-4T is not supported on the 3745, your only option would be the WIC-2T. I don't see any other restrictions internally on the number of WICs that can be supported, which may mean the configurator is wrong. I would suggest you send an email to the configurator folks (I would but I'm not sure which web page you are referencing) to have them verify their info.
Regarding web page, it just the Dynamic configurator tool, after selecting Family 3745, then Even if I had new NW-2W, this let me the capability to seleclt 2 WIN-2T in top of the 3 WICs slots located on the main chassis.
ANd then COnfigurator complain that "overall" 3 WICs max are allowed !!!! may be not yet tested !!!
We are pleased to announce availability of Beta software for 16.6.3.
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