If you are hunting for the right retail equip. pos/cash reg. supplies for a OKI Okipos Series 90, we have lots of high-quality options for you. Retail Equip. POS/Cash Reg. made by OKI are known for their efficient printing and the OKI Okipos Series 90 is no different. Save time and money when you buy retail equip. pos/cash reg. supplies for OKI Okipos Series 90.