Hello: I purchased a SBIG camera used. The seller told me that he had originally purchased an ST7 camera and sent it back to SBIG to have it changed to a ST-2000M about 6 years ago. When they did the mod they changed the information plate on the camera to indicate that it is now a ST-200XM ( See attached Photo.) I am wondering if it is possible to check which CCD chip was installed when the camera was upgraded by the serial number on the camera. (Serial # 07074172). I don't know if they would change the serial number or only the model number on the camera identification plate after the mod. Wanting to know if the chip is a KAI-2000XM, a KAI-2001XM or a KAI-2020M.