It turns out that not all cables and extension cables USB 3.0 functional and even Russian stores you can find extensions that simply do not work or do not work at all.
System unit should be under my desk, and directly connected to it USB-devices are quite uncomfortable. Not to climb under the table, I've been brought to the table 2.0 and USB extension cable ring hub USB 3.0 (ammo1.livejournal.com/496052.html), But the Chinese hub often freezes, and the external 2.5-inch hard drives work through it over time.
I decided to buy an extension cord USB 3.0, to bring it to the table and mount disks to it.
Bought in F-Center for 232 rubles three-meter extension cable USB 3.0. According to the documents, he called Gembird "CCP-USB3-AMAF-10" is written on the packaging Cablexpert "CCP-USB3-AMAF-10" (but the label says "manufacturer Gembird International ").
It turned out that external hard drives that are connected through the extension cord do not work at all. Windows writes the "unknown device". USB 3.0 flash drives work.
Measured resistance feeder veins via Milliommetr extender (ammo1.livejournal.com/933012.html). The resistance of a conductor 262 milliohms, the second 261 milliohms, and with greater poluoma. It turns out that if the hard drive consumes 500 mA, this cable falls 0.26 volts. Apparently, due to the thin wire hard drive is simply not enough food.
On Sunday I went to the bike to change it. It turned out that the exchange takes place through the service, which works only on weekdays. Bought "with sorrow" is another extender - VCOM "VUS7065" (1.8 m) for 222 rubles.
But this cable works fine and the length of 1.8 meters was enough. Now it is on the end table.
The resistance of the cable feeder veins 154 and 156 milliohms. Cores he seems the same thickness as in the three-meter cable, but at the expense of shorter length, it works.
Moral: not all that thick, blue and USB 3.0 with the inscription, is workable or extension cable USB 3.0, even if it is bought in Russian shops. :)
© 2018 Alex Nadozhin
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