This product is either discontinued or we cannot get that from suppliers.
Hp 3TK88AA, 16GB, 260-Pin DDR4 SO-DIMM, Speed DDR4 2666 (PC4 21300), CAS Latency 19, 1.20V, Non-ECC, Unregistered.
Boost the capabilities of your HP Business Desktop PC and improve system performance and application responsiveness with low-power, high-speed DDR4 memory from HP.