I recently bought a GQ 4x4 IC programmer and it came with the 48 pin adapter. This thing allowed me to program 322's without file splitting or needing a bigger programmer, so that was a win for me. One caveat...the adapter is heavy and puts a lot of pressure on the ZIF socket cause it's floating in the air. I decided to fix that.
All info in the link below. Let me know what you think.
https://www.printables.com/model/1822590-willem-gq-4x4-adp-056-adapter-shell-with-support
All info in the link below. Let me know what you think.
https://www.printables.com/model/1822590-willem-gq-4x4-adp-056-adapter-shell-with-support