Adapter pour connexion USB 3 entre ordinateurs.
Adapter pour connexion USB 3 entre ordinateurs.
You can't. USB is a host-device bus, and a PC can't be a "device" on the link (there's no implementation for it), so both PCs will try to be hosts and it won't work. USB A-to-A cables are not part of any USB standard and only exist because of lazy manufactures not wanting to implement it per spec.
They will add a type-A port to the "device" and then send cables for use, even though USB A on the device side doesn’t match the specs. There are dedicated computer link cables available, but I can’t confirm their performance. If you want to exchange files between computers, check point-to-point Ethernet file sharing options.
Soon hosts will support USB connections directly on new specs, forming a local network between them. Devices could remain functional as long as compatible USB controllers were present on the PCs. Some budget laptops from 2010 featured standard Type A and mini/B ports, allowing data transfer between machines via USB—similar to connecting a phone to a computer. In my experience, there’s little reason for PCs to be restricted to just host roles in these specifications; most systems can easily switch between host and device functions.
There isn't a standard solution unless the equipment explicitly allows it through both hardware and software. USB-A to USB-A cables aren't included in the official USB standards because USB follows a client-host architecture. As PCs act as USB hosts, they generally can't communicate directly via USB unless you use a dedicated transfer cable like Belkin's Easy Transfer Cable.
*emphatic shrug* Honestly, there isn't really much more to say. USB chipset makers aren't rushing to create drivers for devices that might not work on a chip level, especially for those trying to force compatibility. Keep in mind USB was born to replace older serial connections like RS-232, which required clear host-device pairings. They didn’t anticipate it would become so popular until they added USB OTG support, and they didn’t want to invest extra effort in building a flexible bus system. It’s simpler to just define the roles—host and device—and avoid the headaches of connecting hosts directly with cables that shouldn’t exist.
Aside from that, FireWire could work for host-to-host communication, letting you share files easily. There was only a small memory access issue that kept it from gaining widespread use due to security concerns.
You can also link two PCs using RS-232 because those lines handle data flow control better than USB does, plus they operate at a lower software level.