I’ve looked into this more myself before contacting elonex. On the mac it displays the vendor info using the USB probe tool:
Device VendorID/ProductID: 0x045E/0xFFFF (Microsoft Corporation)
But as a mounted mass storage device on windows it doesn’t display device or vendor info, maybe because there’s no native driver for it on windows?
*sigh* back to square one.
*sigh* back to square 1