I pulled the adapter out, stuck it into a Sony MSAC-M2 Memory Stick Duo Adapter (the standard adapter that Sony bundle with Memory Stick Duo).

You won't get above the transfer rate of an MS PRO stick, so MS PRO-HG Duo's potential would just be wasted and they are way more expensive. Sony also designed Memory Sticks as I/O devices for cameras, GPS and Bluetooth modules, but they were not widely used. Memory stick pro duo has items of memory stick pro duo card, memory card adapter, memory card reader and smart card reader.Full HD), 2160p (4K Ultra HD), Super 35, Secure Digital (SD), Memory Stick Pro Duo (MS Pro Duo), Memory Stick (MS) …, Screen (LCD/OLED), Black, Grey, 185. With these enhancements, a theoretical transfer rate of 480 Mbit/s (60 MB/s) is achieved, which is three times faster than the Memory Stick PRO format. The original Memory Stick, which was launched in October 1998, was available in capacities up to 128 MB. The only advantage the Vaio adapter has is that it becomes part of your laptop if the laptop has an Expresscard slot, and thus you always have it with you.

MS PRO (of any kind) will go without problems to 32GB in my experience, and that is the limit of the format.If you insert a Memory Stick Micro media into the product without an M2 Adaptor as large as Duo size, you might not be able to remove it from the product.