How to Refill, Add toner :
These OKI cartridges all blocked everywhere. there is no plug.
You need to make a hole (Solder tool) under the blue strip handle and after add toner and Just tape it (Duct , Gorilla)
C911 model, you can make a hole anywhere plain spot.
(400g each bottles : same as OKI Original C911dn)
Color: B, C, M, Y
Type: Refill Kit + 4 Chips
Part No.: Black (400g) + Chip
Part No.: Cyan (400g) + Chip
Part No.: Magenta (400g) + Chip
Part No.: Yellow (400g) + Chip
No. of pages: Up to 24,000 pages (BK) / 24,000 pages (CMY) at 5% Coverage
Compatible With the following models only :
Okidata OKI C911dn (24,000 pages (400g))
Okidata OKI C911dn
Okidata OKI C931e
Okidata OKI C931dn
Okidata OKI C941e
Okidata OKI C941dn
Okidata OKI C942