It can test 16 of 14-pin butterfly signal lasers. This fixture come with 16 LDD cables and 16 TEC cables with 9-pin or 15-pin connectors for 16 lasers. The photos below only show 14 pairs of cables. We will remove two pairs of cables from other laser mounts to make total 16 pairs of cables for this mount . The lasers are not included in this price and are listed separately in different place in our online store. These items were acquired from closed Bookham dept (Nortel laser group).Unpacked equipment without cable is 12.7kg. We have actually checked the fixture, we cannot see “DFB” printed on the circuit board which can be seen through the finger holes near the laser sockets, as specified at page 12 of 3rd pdf link below. You can verify by yourself at 5th photo of 3rd pdf link below. The fixture is wired for type-2 laser pinout which is normally for DWDM signal lasers. Without spend time to unscrew and pull out PCB, we can still see a terminal block under PCB same as the top terminal of page 13 of 3rd pdf link below, so pinout should be configurable to other pinout types of laser.