The devices has been designed as compact USB coding board for 1G SFP, 10G SFP+ and 25G SFP28 transceivers. The coding boards make able to succesfully recode transceivers most popular form factors produced by different world factories. A distinctive feature is the lack of binding to the modules of a particular. QSFPTEK coding box can be used for coding, encoding, writing, and testing a full range of optical transceiver modules, including SFP, XFP, QSFP+, QSFP28, QSFP-DD, etc. This programming coding board is industry-leading in comprehensive performance with auto-sensing and auto-code writing functions. Compatible with data rates from 155 Mbps to 400G, this USB-powered programming board provides real-time EEPROM.