Vintage IBM Quadlink by Quadram... Apple II on an IBM board....If you are looking at this then you know what this is and how hard they are to find. Even more so COMPLETE IN THE BOX as this one is...Looks to be  New In The Box...Everything in EXCELLENT condition.......Very  hard to come by.. ...Item has been in storage and not seen the light of day for over 30 years...It has not been tested ... It is sold as is.... I will combine shipping on multiple items