These printers use the T048520 cartridge:

Epson Stylus Photo R-200

Epson Stylus Photo R-220

Epson Stylus Photo R-300

Epson Stylus Photo R-300 M

Epson Stylus Photo R-300 ME

Epson Stylus Photo R-320

Epson Stylus Photo R-340

Epson Stylus Photo R-500

Epson Stylus Photo RX-500

Epson Stylus Photo RX-600

Epson Stylus Photo RX-620

Epson Stylus Photo Rx-640