Cool, 238GB out of 256GB could be seen instead of 223GB. That would be assurance of some sort.
BTW, I also found the power requirements of Retina Macbook Pro SSDs to be 3.3V - 2.39A here
Roughly 600 bucks / 3,800 RMB for 768GB SSDs
22-pin SATA adapter could fit inside an iPod after removing the case
Another one without a case is 97mm by 48mm
The iPod Video should be 103.5mm by 61.8mm
Yet another 40-pin ZIF adapter for 22-pin SATA interface
Could all that be installed inside an iPod while the battery is able to provide enough juice for that 3.3V - 2.39A SSD by any chance?
Chinese manufacturers might actually make adapters straight from Retina MBP SSD interface to 40-pin ZIF if there were enough interests.