I believe the 5690 has a miniPCI slot for internal wireless... I cannot be certain, tho. My 8887 and it's successor's have one. There was a time when miniUSB was used, but thankfully, that's no longer the case.
Search around for the Technical Manual (I have a 5600D one, in PDF, somewhere, but don't know if that also covers the 5690). Not the User's Guide, but the highly-technical break-down-like manual.