c7000 sas switch or pass-thru

[Digit_ITS]

Firstly I am new to a blade environment, to i apologize in advice if I am missing the obvious

But I am trying to reuse some old kit that been discarded by a company I now work for, which is a C7000 with 8 g6 blades.

I want to connect an MSA60 (currently in use) and a MDS600 (discarded), but there is no 'SAS module' in the rear of the chassis, from a little investigation I have found the following options :-

3GB SAS BL-c Pass-Thru Switch Module    488454-001 

3GB SAS BL-C 8-Port Switch Module           AJ864A

I can find little information on the 'passThru' version, I expect as it 16 port, it literally maps one blade to each port, and possibly does not support  zones etc, But can anyone confirm this or give any insight ?

Thanks in advance,

Martyn