If your external data storage device is wired to the router and you are trying to view it from another device on your network then your issue is most likely just a LAN setup/permissions issue having nothing to do with TCP Acceleration that really being associated with your OS's networking internal settings.
If you are instead trying to access a storage device on your network from a remote (non-LAN location) then what you are looking for is more along the line of "port forwarding".
With a Hughes connection because of the "proxied web acceleration" type of connection you would need what Hughes calls a static ip address. Those were in the past, on Hughes legacy systems available as an extra cost item. However all IPv4 address have been depleted so that option is no longer available.
It was said that some had been available on Hughes Business grade service plans but even those were in limited areas.
The only other thing is going with IPv6 compatible devices and on a Gen4 HT1000/1100 modem, compatible router and so on. I have yet to see anyone post details of how they made one work however.
Thanks for the reply. Just to confirm, yes, there is no option in SCC for the customer nor tech support to disable the TCP Acceleration.
I do however understand your dilemma on this issue, but I don't think disabling TCP Acceleration is the key here. You want to access the USB port from your router, which tells me that having a static IP might work for you.
What if we switch you to a legacy plan at no cost, that will provides a static IP? We could switch you to the Power150 plan that provides an IPv4 static IP you can try out to test, as we cannot guarantee that this would work.
Please let us know if you would like to continue forward with this, as it might be a fix to your concerns. Your patience and cooperation is appreciated, and we look forward to hearing back from you.