HPE 16GB 1Rx8 DDR4-3200 CAS-22 UDIMM Standard Memory Kit

P43019-B21 is a 16 GB single-rank (1Rx8) UDIMM at DDR4-3200 with a CAS latency of 22. Getting 16 GB from a single rank of x8 chips is the point of this kit: capacity without a second rank.

Unbuffered memory belongs in systems that call for UDIMMs, so confirm that before ordering. The spare number is P44877-001, which refers to the same module.

Single-rank 16 GB UDIMMs are useful where the board supports unbuffered memory but a lower rank count is preferred for compatibility or simplicity. Whether you are replacing a failed module or growing a workstation, the spare number lets you confirm the match against HPE documentation.

New, refurbished and used units are listed, with 90 days of warranty on used and 1 year or 3 years on the rest.