A HP Inc. equivalent 8 GB Unbuffered Non-ECC DDR4 SDRAM - SO-DIMM 260-pin 2666 MHz (PC4-21300) from Hypertec
Hypertec HYR31625684GBOE memory module 4 GB 1 x 4 GB ECC
Hypertec HYMFS2802G memory module 2 GB DDR3 1600 MHz
Hypertec HYMDL8402G memory module 2 GB 1 x 2 GB DDR3 1066 MHz
Hypertec HYU31025684GBOE memory module 4 GB DDR3 1066 MHz
Hypertec HYS31312881GBOE memory module 1 GB 1 x 1 GB DDR3 1333 MHz
Hypertec HYMIN8804G memory module 4 GB 1 x 4 GB DDR3 1333 MHz