Features:

• Type --- Memory Stick Interface (serial/4-bit parallel/8-bit parallel)
• Write Speed --- 40Mbps minimum (when optimized with compliant host devices) (4-bit parallel); 120Mbps minimum (when optimized with compliant host devices) (8-bit parallel)
• Transfer Speed (Parallel Transfer) --- 480Mbps (60MB/sec) in Parallel Transfer (Theoretical maximum speed)

Editor Reviews:

Product Description:
Sony's Memory Stick PRO-HG Duo media has shorter data transmission times and faster recording times between hardware with an 8-bit parallel interface and the flash memory device. With the addition of four connector pins to the Memory Stick's traditional 4-bit parallel interface, the resulting 8-bit parallel interface provides write speeds of up to 30MB/s (240 Mbps) megabytes per second.

Rating : - A perfect match for the Sony PCM-50 audio recorder
I'm using the 4-Gig version of the MS-EX4G as the expansion memory for the Sony PCM-50 stereo audio recorder.

The little Memory Stick has performed flawlessly, recording CD-quality 16 bit/44KHz stereo audio. I haven't pushed it to 24 bit/96KHz but Sony specifies this model MS Pro for the DCM-50 so I assume it could handle the bandwidth.

At 16/44 you'll get about 6.5 to 7 hours' worth of stereo audio on this card. Pretty amazing when you think of how many 10" tape reels that used to consume.

Reads fine through standard card-readers in XP Pro and Vista Home Premium PC's.