[求助]PC Card的速度到底有多快??

最近想在NB(小狗機)上測試一些SATA的設備, 於是想到買一張PCMCIA介面的eSATA擴充卡,
但是查了一下PC Card bus的規格竟然有超多種的!

PC Card 16 bit 255ns Byte mode 31.36 Mbit/s 3.92 MB/s
PC Card 16 bit 255ns Word mode 62.72 Mbit/s 7.84 MB/s
PC Card 16 bit 100ns Byte mode 80 Mbit/s 10 MB/s
PC Card 16 bit 100ns Word mode 160 Mbit/s 20 MB/s
PC Card 32 bit (CardBus) Byte mode 267 Mbit/s 33.33 MB/s
ExpressCard USB mode 480 Mbit/s 60 MB/s
PC Card 32 bit (CardBus) Word mode 533 Mbit/s 66.66 MB/s
PC Card 32 bit (CardBus) DWord mode 1067 Mbit/s 133.33 MB/s

一般的NB的PC Card是哪種速度呢??