To make using tunable DWDM XFP easier, AMS Technologies offers the TRX Tuning Box, specially designed to work with any PC. Simply connect it via USB and it will synchronize any DWDM channel using its free software.
Advantages:

1. Ultra-fast availability of any 10G DWDM channel (full C band).
2. Stock of units for spare parts.
3. Reuse of the units in new projects.

More information or a quote