The HP #975A Magenta Ink (L0R91AA) is a high-quality ink cartridge designed to deliver vivid and long-lasting prints. With a page yield of up to 3000 pages, this ink cartridge is perfect for home or office use. It is compatible with select HP printers and is easy to install. Printer Compatibility: HP PAGEWIDE PRO 452,HP PAGEWIDE PRO 477,HP PAGEWIDE PRO 552,HP PAGEWIDE PRO 577,HP PAGEWIDE 55250,HP PAGEWIDE 57750