Which external cable for dell SAS 6Gbps PCIe adapter to tape drive

Hello,

I have a dell R220 with a PCIe (SAS 6Gbps) HBA external controller (Dell part number in the quote 405-AACH). I need to hook this to a Tandberg StorageLoader LTO-4 - tape autoloader - LTO Ultrium - SAS Mfg. Part: 7816-LTO which has on it a 26 pin 4x Shielded Mini MultiLane SAS (SFF-8088) external interface.

The vendor (non-dell) sent me a 1m internal SAS cable (SFF-8087 to SFF-8482) which I am totally surprised how that can be connected even internally. So another questions Is, is this internal cable going to be useful for anything for server to tape drive connection?

Any help is appreciated. Thank you.

UG