Thank you for contacting Intel Community.
1.Please clarify which part of pin hole did you mean at the bottom side?
2.If it is the same device, everything should be the same including the function of the device even though they were from different COO.
Kindly elaborate more for us to assist you with this.
Please noted that there's a change for Max3000 including EPM3256ATC144-10N. Hence there are a few different for the lead frame BUT the function for both device is still the same. You may refer to PCN below for more information:
Hope this clarify. Thank you.