HP Toner Original Cyan 508A/CF361XC M553(WHITE BOX)

The 

 toner is a high-yield, contract-specific cartridge for use with HP Color LaserJet Enterprise M553 series and M577 series printers, available from various online merchants. The "XC" in the product code indicates it is a contractual/managed print services (MPS) cartridge often sold in a white or plain box packaging rather than a retail box

The 

HP 508A/CF361XC

 is an original HP high-yield toner cartridge designed for professional-quality color printing. 

Winterholt & Hering +3

• Compatibility: This cartridge is compatible with HP Color LaserJet Enterprise M552, HP Color LaserJet Enterprise M553 (M553dn, M553n, M553x), and HP Color LaserJet Enterprise MFP M577 series (M577dn, M577f, M577z) printers.
• Page Yield: According to sources like Lyreco Group and HP.com, the high-yield 
  CF361XC
   cyan cartridge yields approximately 9,500 pages (based on 5% coverage). The standard yield CF361A (508A) yields about 5,000 pages.
• Original HP Quality: It features HP's ColorSphere 3 toner, which is engineered for fast print speeds and consistent, professional results with accurate toner level tracking.
• Contractual Version ("White Box"): The "XC" suffix indicates it's part of HP's Managed Print Services (MPS) program. These are genuine HP products but are often distributed outside of standard retail channels in a plain or white box, which may sometimes be available at lower prices from certain vendors. 
  HP +5

Overall, users and experts praise original HP toners for their reliability and consistent print quality, often outperforming non-HP alternatives in terms of usable pages and compatibility. 

HP +1