Comes with all 15 drive trays. Also comes with an SFF-8470 to SFF-8088 cable. This cable allows you to use any modern controller with a Mini SAS external port to interface with this enclosure. I had this enclosure working with 4TB drives.
However, 4TB+ compatibility will depend on how your controller card interfaces with this enclosure as this was only officially validated for 2TB drives. The item "Dell PowerVault MD1000 3U Storage Array 15 Trays SAS Cable" is in sale since Saturday, October 13, 2018. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\Network Storage Disk Arrays\SAN Disk Arrays". The seller is "used_cpu" and is located in Edmonton, AB.
This item can be shipped to Canada, United States.