OWC 4GB UPGRADE: Consists of a single 4GB DDR4 2133 PC4-17000 CL15 1Rx8 288-pin 1.2V Non-ECC Unbuffered DIMM Memory RAM Module Upgrade memory module compatible with QNAP models TVS-1282, TVS-1282T, TVS-1282T3, TVS-682 And TVS-682T. 100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs. EASY INSTALLATION: In Most Cases, Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for Help. INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing. Replacement for QNAP part number RAM-4GDR4-LD-2133.