Firmware file for PS-5P-M --- 2P1S Ethernet Print server with Netware, SMB protocol, TCP/IP, Apple protocol Back Panel ID number: PSE1S2P-BNUAS /DS File name principle: (model name)_(Hardware version)_(Firmware version).zip Please check your hardware version first and then download the latest firmware that matchs your hardware version. The hardware version can be known by: 1. Download the NT95UPG.exe then install it into the 95/98/NT computer. 2. Run ugutil then click "Browser Target..". Then will show a list of hardware ID of our print server(s). 3. Select the hardware ID of the printserver you want to upgrade then click "OK". 4. "Device Information" page will show up. H/W version is the abbreviation of Hardware version.