There are various types of APW12 power supplies, so it's crucial to pay attention to the model and version when using them.

Currently, the primary APW12 power supply models include: APW121215, APW121417, and APW12A. These power supplies cannot be used interchangeably, and their main differences are listed below.

APW121215 is a widely used power supply at present, compatible with most of the 19 series models. The four-digit number 1215 following APW12 indicates an output voltage of 12-15V. There are multiple versions of this power supply, including a, b, c, d, e, and f, with the following compatibility guideline:

APW121215 a, b, and c versions are compatible with each other (lacking voltage feedback). b. APW121215 d, e, and f versions are interchangeable (featuring voltage feedback). c. APW121215 d, e, and f versions can replace a, b, and c versions by updating the firmware. However, a, b, and c versions cannot replace d, e, and f versions.