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

X60/X61 series specific matters only.
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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!
X1C6 20KG-S3Y80N, 2x X61s 7667-34G, X61s 7667-Y24, X61s 7667-WQ8, X61s 7666-AA5, X61s 7666-34G, X60s 1702-W96, T43 2669-YJ6, T42 2373-Q91

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, A21m 2628-GXU

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

Still NOT a great day for a Guinness! (the Real Black Stuff).
Ireland is on FULL lockdown until at least 31 January 2021!
Covid-19: Stay safe, so Mask it or Casket!

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!
X1C6 20KG-S3Y80N, 2x X61s 7667-34G, X61s 7667-Y24, X61s 7667-WQ8, X61s 7666-AA5, X61s 7666-34G, X60s 1702-W96, T43 2669-YJ6, T42 2373-Q91

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