The DW5930e is a variant of the T99W175. Here is a snippet of the antenna interface:
Interface.1.JPG
ANT0
TX:
LTE:
LB:B5,8,12,13,14,17,18,19,20,26,28,71
MHB:B1,2,3,4,7,25,30,34,38,39,40,41,66
5G Sub6G:
LB:n5,8,12,20,28,71
MHB:n2,66
RX:
LTE:
LB:B5,8,12,13,14,17,18,19,20,26,28,29,71
MHB:B1,2,3,4,7,25,30,32,34,38,39,40,41,66
UHB:B42,48; LAA: B46
5G Sub6G:
LB:n5,8,12,20,28,71
MHB:n1,2,3,7,38,41,66
UHB:n77,78,79
ANT1
RX:
LTE:
MHB:B1,2,3,4,7,30,38,41,66
UHB:B42,48
5G Sub6G:
MHB:n1,2,3,7,38,41,66
UHB:n77,78,79
ANT2
TX:
LTE:
MHB:B1,2,3,7,66
UHB:B42,48
5G Sub6G:
MHB:n1,2,3,7,38,41,66
UHB:n77,78,79
RX:
LTE:
MHB:B1,2,3,4,7,30,38,41,66
UHB:B42,48
5G Sub6G:
MHB:n1,2,3,7,38,41,66
UHB:n77,78,79
ANT3
RX:
LTE:
LB:B5,8,12,13,14,17,18,19,20,26,28,29,71
MHB:B1,2,3,4,7,25,30,32,34,38,39,40,41,66
UHB:B42,48; LAA: B46
5G Sub6G:
LB:n5,8,12,20,28,71
MHB:n1,2,3,7,38,41,66
UHB:n77,78,79
Best option would be to connect all 4 but if you only have something like 2 cables available I would research the specific carrier that you plan to use and find out what specific bands they use for 4G/5G signal and connect to the appropriate ports as identified above. It does look like ports 0 and 2 are the main ports for both tx/rx as ports 1 and 3 show only rx and gps.
I don't think anything is needed as far as telling windows that only certain ports are connected. I would assume the modem would handle the rf front end internally when powered up by checking what signals are available on each port.