Fanless Mini-ITX case | Akasa Thermal Solution

• Aluminium fanless CPU cooling design
• Support four 2.5" drive bays
• One serial port opening (optional serial port cable)
• Optional 80W external power adapter
• Compatible Supermicro Atom motherboard
Supermicro® A1SAi-2550F / Supermicro® A1SAi-2750F
Supermicro® A1SRi-2558F / Supermicro® A1SRi-2758F

Material	Aluminium with anodized black
Panel material	Aluminium
Motherboards types	Mini-ITX boards
Motherboard support	Supermicro® A1SAi-2550F / Supermicro® A1SAi-2750F Supermicro® A1SAi-2550F / Supermicro® A1SAi-2750F
Dimensions	245 x 274 x 68.5mm (W x D x H)
Internal bays	four for 2.5” HDD (max height 9.5 mm)
Security	Kensington lock
VESA mounting	Support
Front panel USB 3.0 ports	2
Serial Port Opening	1
External AC power adapter (optional)	80W
Power connectors	DC jack to 4pin ATX12V
Product code	A-ITX17-M1B

The key difference is that the "A1B" version is the branded version with the Akasa logo on the front panel of the case. Whereas the "M1B" version is the unbranded version, i.e. without the Akasa logo.

General Information

Contents / Package

I can see two product codes for this case. What is the difference between the product codes ending in - A1B and M1B?