Can't connect to My Book World

On the machines running OS10.11.1 and 10.11.3 El Captain, attempts to connect to my two “My Book World” drives result in the following notification on one of the drives and only a spinning ball on the other.
“The version of the server you are trying to contact is not supported. Please contact your system administrator to resolve the problem.”

On the machines running OS 10.3.9 and 10.6.8 Two partitions of one drive show up; In one the files are visible and accessible while in the second, all that appears is three empty folders( one folder should contain 507.36 GB of photos).The second Drive does not show up at all. ( It Contains a copy of the first drive for back-up)

Does anyone have any idea of a possible fix?

Hi there,

I have no tied this, However it seems this drive is considered a legacy device and might not be supported with newer versions of Mac OS. Lets see if another user can share some information or tips on this matter.