For Standard/Enhanced Willem and GQ-2X,GQ-3X,GQ-4X True-USB EPROM programmer.
It has on board both DIP40 and DIP42 ZIF sockets and 2 PLCC44 sockets on board. So that be able to support both DIP and PLCC package 16 bit EPROMs easily.PLCC44 chips: CAT28F102, M28F102, 28F102N.
Device supported on ZIF socket:
27C1024,27C2048, 27C4096,27C210,27C2002,27C4002,27C400, 27C800, 27C160, 27C322.
For GQ-4X does not need address wires. For all 32 pin ZIF Willem programmers, you can purchase 42 pin EPROM address wires separately, the part# is CPT-031.
Jumper setting on board:
J1 2-3 short 27c322, 1-2 short for all others
J2 is extended address pin header, it is only for 42 pin EPROMs. Connect those pins to programmer address pin header, not the ZIF socket.
J5, chip compatibility jumper. Only change it if the chip has inconsistent reading, writing.