The most reliable method is through the official OKI support page :
This is a detailed technical write‑up regarding the driver download process, specifically addressing the “TRMDS 5” context (likely a reference to a terminal, POS system, or legacy software environment such as TRMDS 5.0). Oki Pt 330 Driver Downloadtrmds 5
For LAN models, you may need to assign a static IP address through the OKI Configuration Tool or through the device's administrative menu. The most reliable method is through the official
on its public site (end‑of‑life product). However, you can obtain them via: you can obtain them via: