It'll be fine. Thats odd thought the number the package has on it because even from Kingstons it says its a 4 stick kit.
"HyperX HX421C14FBK4/16 is a kit of four 512M x 64-bit (4GB)
DDR4-2133 CL14 SDRAM (Synchronous DRAM) 1Rx8, memory
module" http://www.kingston.com/datasheets/HX421C14FBK4_16.pdf
Yes it's compatible. But that part number you posted is not for a single 16gb stick it's a 16gb kit containing 4 4Gb dimms
Thanks for the answer! Is that a problem? The part number I posted is the number of the 16GB ram I bought (it's on the package) but It's just one stick of 16GB instead of 4 of 4GB...
It'll be fine. Thats odd thought the number the package has on it because even from Kingstons it says its a 4 stick kit.
"HyperX HX421C14FBK4/16 is a kit of four 512M x 64-bit (4GB)
DDR4-2133 CL14 SDRAM (Synchronous DRAM) 1Rx8, memory
module" http://www.kingston.com/datasheets/HX421C14FBK4_16.pdf