To summarize a few details, the PM1633A is a SAS3 (aka SAS 12 Gbps) SSD drive, which accepts an SFF-8482 plug. This SFF-8482 plug is the one named in the SAS3 standard for use on drives. You mention the LSI 9311 HBA, which does support SAS3 and has a pair of SFF-8643 receptacles, which is specified in the SAS3 standard for use on backplane aggregators. That is to say, when multiple drives are bundled up onto a single cable.
When used for SAS3, SFF-8643 supports up to four drives. And so you will find forward-breakout cables online that go from SFF-8643 to 4x SFF-8482.
The cable you mentioned -- an SFF-8643 to SFF-8639 -- is meant for U.2 drives. Because of the 4x PCIe lanes used for U.2, a single drive uses all the pins in an SFF-8643 plug, which is why this cable can only attach to a single drive. Because SFF-8639 is backwards compatible with SFF-8482, this could still be used for SAS3 drives, but it would waste the other three "lanes" in the cable.
With all that said, I would not recommend the cable you listed, and instead replace it with the aforementioned forward-breakout to 4x SFF-8482. This way, you can later buy three more SAS3 drives. I presume you're not planning to ever use U.2 here.
Also, regarding the choice of HBA, was there a reason you chose the 9311? I have both the venerable 9300-8i and a newer 9305-16i. Both work great for me and support SAS3. It's notable that power and heat is lower on the 9305. The 9300, 9305, and 9311 all have the same pair of SFF-8643 connectors.
