First set of directories identifies the HW platform

 2.0 - First generation Express for Lync  hw platform: up to 1000 users
     - (2 eth ports)

 3.0 - Second generation Express for Lync hw platform: up to 1000 users
     -(7 eth ports)

 SMB - Small/Medium Business Express for Lync hw platfrom: up to 50 users


For each hw platfrom

2.0

 Lync2_SFB_GA_USB    - GA Skype for Business USB image
                     - used to factory reset Sangoma Express for Lync platfrom
 Lync2_Lync_GA_USB   - GA Lync 2013 USB image
                     - used to factory reset Sangoma Express for Lync platform

3.0
 Lync3_SFB_GA_USB    - GA Skype for Business USB image
                     - used to factory reset Sangoma Express for Lync platfrom

SMB
 LyncSMB_SFB_GA_USB  - GA Skype for Business USB image
                     - used to factory reset Sangoma Express for Lync platfrom