For Sale SOtM tx-USBultra Special Edition with one  10MHz master clock input and three clock outputs at 24, 25, and 27 MHz.  The three clock outputs can be used for external re-clocking of computers, switches, etc.  (I used them to re-clock my NUC7i7DNBE)

Original cost was $1470 plus $150 for the three clock outputs, and $200 for shipping to/from Korea.