This is a Used Hynix 16GB (16GBx1) 1Rx8 PC5-5600B DDR5 SODIMM Laptop Memory Ram.  This auction comes with one stick.  Total of 16GB.  This memory tested & removed from a working laptop.  If you have any question, please feel free to contact me.  Shipping to US only.  NO RETURN.  FINAL SALE AS IT IS.