CUD Features
  1.  Multi-Interface  
  USB 1.1/2.0
  CompactFlash (IDE)
  SD card
  A new interface to be proposed by the industry
2. Serial / Parallel Mode Selection
3.No need for card reader, Direct link to PC.
4.Versatile Memory Support
5.Encryption Function
6. CF Cartridge Device
7. Push-Push SMT Connector

CUD advantages
1. Compatible with SD card, But Smaller
SD card is the mainstream on the market today mainly because of its small size, 32mm(L)*24mm(W)*2.1mm(T). But CUD card is even smaller - 30mm(L)*23mm(W)*2.3mm(T)
2. Compatible with CF card, But Faster.
Except CompactFlash and SmartMedia, which use parallel interface, all major flash memory cards on the market use serial interface to transfer data. Currently the fastest CF card supports PIO Mode 4 (transmission rate is 16.67Mbytes/s). CUD card also supports CF interface and PIO Mode 4, but the transmission speed is even faster.
3. Support Both Serial and Parallel Mode
In addition to CF interface, CUD also supports an open, royalty-free standard interface proposed by China, Taiwan, Korea and Japan industry. The interface supports three transfer modes: serial, SPI and byte mode, with maximum transmission rates at 32Mbits/s, 32Mbits/s, 32Mbytes/s respectively.
4. Support USB 2.0, no need for card readers
All major flash memory cards on the market need card readers to make data transfers with PC. CUD has USB 2.0 interface built-in (worldwide patented) that easily connects to PC. With CUD, there is no need for card readers. This gives CUD users enormous convenience and cost-savings. CUD users not only get the fastest and smallest card in the world, they also get the hottest gadget - silicon harddisk for free.
5. Conclusion
CompactFlash currently has the largest market share because of its standard IDE interface. However, one fatal disadvantage - its big size - makes DSC/PDA/Cell phone makers both love and hate it. The only one advantage of SD card is its small size, but the slow transmission speed and the protocol that's incompatible with other cards make it unfavorable among the engineers. CUD solves the shortcomings and covers all advantages of other cards. It is compatible with CF card, only faster. Its size is smaller than SD card. It has a patented built-in USB 2.0 interface which eliminates the need for card readers and reduce the cost of usage to the lowest. What's more, the state-of-the-art high-precision connector design makes CUD even more competitive.

More than 100 PDA/ DSC/ Mobile Phone/ MP3 Player/ AV Player/ Handy Game/ eBook/ STB/ GPS/ Car Radio makers in China, Taiwan, Korea, Japan, U.S. and Europe and design Products with CUD cards, including Canon, Kodak, Docomo, Sanyo, Motorola, Handspring, Siemens, Samsung and so on.

CUD卡的優勢
Small,Fast
Support USB 2.0,
No need for card readers

與CF卡相容讀寫速度更快,比SD卡還小內建USB 2.0介面

1. 體積小

現今市場上的主流有採用SD卡的趨勢,原因它是世上最小的卡(ΧD卡出現之前),長32mm,寬24mm,厚2.1mm。但CUD卡卻比它更小,長30mm,寬23mm,厚2.3mm。

2. 與CF卡相容,傳輸速率更快

除了CF及SM卡是以parallel模式(快)傳送資料外,其餘的卡皆以serial 模式(慢)傳送資料,目前傳輸速率最快的CF卡支援到PIO Mode 4(傳輸速率為16.67Mbyte/s),CUD卡亦具備CF卡介面,支援PIO Mode 4,但傳輸速率卻更快。

3. Serial / Parallel Mode兼容

CUD卡除了支援CF卡介面外,亦開放一個由中國、台灣、日本、韓國產業界共推免授權金的多元介面,該介面支援三種模式:Serial,SPI和Byte mode,傳輸速率分別為:32Mbit/s,32Mbit/s及32Mbyte/s。

4. 支援USB2.0介面,不需讀卡機

世上所有的Flash卡,皆需要讀卡機,方能在電腦上存取資料,CUD卡內建USB2.0介面(已於2000年取得世界各國發明專利),因此CUD卡的使用者不需要讀卡機,也能方便地利用電腦存取資料,這不但給予使用者極大的便利以及節省成本,也讓擁有CUD卡的人,同時也擁有了熱門的隨身記憶碟-矽碟機。

5. 結論
CF卡是目前世界銷售量最大的卡,主因是標準IDE介面,但卻有一項致命缺點就是體積太大,PDA / 數位相機 / 手機業者是又愛又遺憾。因此SD卡趁勢崛起,然而SD卡祗有一項優點就是體積小,但是工程師又都嫌它傳輸速率太慢,同時自訂的傳輸格式不相容於其他卡。如今CUD卡的出現,把以上缺點都解決,並且涵蓋了所有其他卡的優點,亦即與CF卡相容,但傳輸速率比CF更快,而體積卻比SD卡還小,同時內建USB2.0介面專利,不需讀卡機,將使用成本降至最低。另外,配合高精密又插拔簡便的Connector設計,更增加CUD卡的競爭力。
註:目前已經超過100家 PDA/ DSC/ Mobile Phone/ MP3 Player/ AV Player / Handy Game/ eBook/ STB/ GPS/ Car Radio等製造廠商將CUD卡Design-in產品內,包括Canon、Kodak、Docomo、Sanyo、Motorola、Handspring、Seimens、Samsung等 。