The HP #975X Black Ink (L0S09AA) is a high-capacity ink cartridge that delivers professional-quality prints. With a page yield of up to 10000 pages, this ink cartridge is perfect for large printing jobs. 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