The Everprint CHIP-SAM-ML-1630-E is a cartridge chip for Samsung ML1630 and SCX4500 printer models. It is listed for use with Samsung ML-D1630A and SCX-D4500A toner cartridges, making its intended role clear when servicing or replacing a cartridge chip for those references.
The stated yield is 2000 pages (2K). This identifies the page capacity associated with the chip and gives a useful reference for routine cartridge use. The listing describes a chip component rather than a complete toner cartridge.