WorkForce ET-4500
The WorkForce ET-4500 is the business member of the full-664 group: black (T664120) up to 4,000 pages and colours up to 6,500 pages each, in 70 mL bottles. Clever Supplies compatible 664 singles and the 4-bottle set are below — keyed fit, no chips, lifetime warranty.
| Bottle | Type | Color | Approx. Yield |
|---|---|---|---|
| Epson T664120 (compatible) | Ink bottle, 70 mL | Black | 4,000 pages |
| Epson T664220 (compatible) | Ink bottle, 70 mL | Cyan | 6,500 pages |
| Epson T664320 (compatible) | Ink bottle, 70 mL | Magenta | 6,500 pages |
| Epson T664420 (compatible) | Ink bottle, 70 mL | Yellow | 6,500 pages |
| Epson 664 Set of 4 (compatible) | Full bottle set | Black / Cyan / Magenta / Yellow | 4,000 black, 6,500 per color |
ET-4500 Ink — Full 664, and Not to Be Confused With the ET-4550 Epson's ET-4500 page and Ink Finder agree completely: Replacement Ink — 664 Black, Cyan, Magenta, Yellow, at Black 4,000 / Color 6,500 pages. This printer takes a 664 black, full stop.
The trap is one digit away: the ET-4550 — near-identical name, same shelf — takes a 774 black (664 only in its colours). If your badge says ET-4500, every bottle on this page including the black and the set is correct; if it says ET-4550, use that model's page instead, where the black shown is the 774.
Every Clever Supplies 664 bottle carries a lifetime warranty and 1-year free returns.