The only difference between AS3104T and AS3204T is processor. AS3204T has slightly more powerful CPU, but most likely you won’t notice a difference. So whichever is cheaper I would go for.
|CPU||Intel Celeron 1.6GHz Dual-Core (burst up to 2.08~2.48GHz) Processor||Intel Celeron 1.6GHz Quad Core (burst up to 2.24 GHz) Processor|
|Hardware Encryption Engine|
|Hardware Acceleration Engine||H.264 (AVC),H.265(HEVC), MPEG-4 Part 2, MPEG-2, VC-1||H.264 (AVC),H.265(HEVC), MPEG-4 Part 2, MPEG-2, VC-1|
|Memory||2GB DDR3L (not expandable)||2GB DDR3L (not expandable)|
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