ACEPC AK1 series have 3 similar models as below:
ACEPC AK1 Pro: Windows 10 Pro OS, with HDD module
ACEPC AK1: Windows 10 Home OS, with HDD module
ACEPC AK1 Slice: Windows 10 Home OS, without HDD module
Here we strongly recommend this model for March 2018: ACEPC AK1 Slice, which has the all the computing and connectivity functions as classic ACEPC AK1, but is much cheaper because it has no the HDD module.
Check its details.
Buy it at Amazon.
ACEPC Product List