This was based on my actual recent order with Staples, which still applicable this week with the $20 off $100 coupon 52439, Staples has this week.
I was doing a lot of info digging on what HP 6SK99UT#ABA was, and there was a lot of misleading image posted on Provantage, Newegg Business, and even HP website doesn't have any information on it. And, I was betting on a specification that posted for ZBook G4 without specifying the P/N.
Link on Staples:
HP 6SK99UT#ABA 1TB PCI Express Internal Solid State Drive [staples.com]
(listed for $159.99)
When it came in the mail (see attached photo):
, it's the PN for Samsung PM981a (better than PM981).
This drive is essentially better then Samsung SSD 970 PRO (based on specs) at a fraction of the price. You can look up the specs on Samsung.com.
The only drawback is that it's only 1-year warranty due to OEM. If you use credit card, you can take advantage of extended warranty to move it to 2-year.