HP C9730A Color LaserJet 5000 645A Black Laser Toner Cartridge
Couldn't load pickup availability
Use this text to encourage communication or promote sharing on social networks.
The HP C9730A (also marketed as HP 645A) is a genuine OEM black toner cartridge for the HP Color LaserJet 5500 and 5550 series printers, confirmed by the part number printed directly on the cartridge body and retail box visible in the photos. Rated for 13,000 pages at 5% page coverage per HP's published yield specification, this cartridge uses HP's proprietary toner formulation engineered to meet the original design specifications of the 5500/5550 imaging system. The cartridge ships sealed in an orange light-protective anti-static bag with orange shipping retainers and blue drum-protection clips intact, indicating unused/new condition. The retail box (photographed) shows the dual designation "645A / C9730A," confirming HP's crossover numbering — both part numbers reference the identical cartridge. The cartridge incorporates a built-in OPC drum assembly and toner reservoir in a single replaceable unit, standard for this HP Color LaserJet platform.
Product Specifications
| Brand | HP (Hewlett-Packard) |
| Part Number (MPN) | C9730A |
| Alternate Part Number | 645A |
| Color | Black |
| Page Yield | 13,000 pages at 5% coverage |
| Compatible Printers | HP Color LaserJet 5500, 5500dn, 5500dtn, 5500hdn, 5500n, 5550, 5550dn, 5550dtn, 5550hdn, 5550n |
| Cartridge Type | OEM Genuine HP |
| Condition | New, sealed in original light-protective bag |
| Toner Color Family | Black (K) |
| Contents | 1 cartridge |
| Drum Included | Yes — integrated OPC drum assembly |