This is a professionally remanufactured Epson magenta ink cartridge (T054320). It is an original Epson T0543 cartridge that has undergone a thorough cleaning and refilling process with ink that meets original specifications. This cartridge is 100% compatible with original Epson ink and has been tested to ensure reliable performance. The ink monitoring chip has been reset for accurate ink level tracking. Backed by our 100% Quality Satisfaction Guarantee.