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USB3.0 ExpressCard34 + adapter in X60s/X61s vs USB2.0

X60/X61 and X60t/X61t Series
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dandreye
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USB3.0 ExpressCard34 + adapter in X60s/X61s vs USB2.0

#1 Post by dandreye » Fri Nov 06, 2020 8:58 am

Hi All,

Will I get any higher speed (e.g. with an external USB3.0 drive that is not a bottleneck) with one of these USB3.0 cards in an ExpressCard34-CardBus adapter plugged into the CardBus slot of X60s/X61s compared to their native USB2.0 ports?
https://www.aliexpress.com/item/32850262691.html

My research so far suggests that I won't as ExpressCard34-CardBus conversion is capped at USB2.0 speed for some reason (unsure by nature or just in those adapters)... or not?

Thanks in advance!
2x T480s, 6x X61s, X60s, T43, T42

dr_st
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Re: USB3.0 ExpressCard34 + adapter in X60s/X61s vs USB2.0

#2 Post by dr_st » Fri Nov 06, 2020 9:04 am

ExpressCard-CardBus is indeed capped to USB 2.0, because that's the protocol these adapters use.

An alternative would be a PCIe to PCI bridge (which would be capped at like 133MB/s theoretically), but these chips are much more complicated and I am not aware of any ExpressCard-CardBus adapters utilizing them.
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad

RealBlackStuff
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Re: USB3.0 ExpressCard34 + adapter in X60s/X61s vs USB2.0

#3 Post by RealBlackStuff » Fri Nov 06, 2020 9:05 am

Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine
.

dandreye
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Re: USB3.0 ExpressCard34 + adapter in X60s/X61s vs USB2.0

#4 Post by dandreye » Fri Nov 06, 2020 9:18 am

RealBlackStuff, dr_st:

Wow, what a thread: thanks so much!
2x T480s, 6x X61s, X60s, T43, T42

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