Upgraded my Dell XPS 15 laptop to 32GB and replaced these - bought in 2024. Brand new. 
  • 16GB RAM Kit ( 2 x 8GB Modules ) | DDR5 SO-DIMM 262-Pin | Speeds up to 4800MHz, ( PC5-38400 / PC5-4800B )
  • NON-ECC Unbuffered | 1Rx8 or 1Rx16 - Single Rank | JEDEC DDR5 standard 1.1V