Thanks for reply Joe.
I do not know if it is encrypted or not. It certainly is not an option I requested when I installed it for her 2 years ago.
Is there any way to know by looking at the USB interface board? The board has the name APOLLO on it, followed by D1U/D1B
94V-0
And on the back of the board is a barcode that reads CD1U3011710000C2 4061-705059-001 Rev AE