{"product_id":"bidirectional-usb-3-multiplexer","title":"Bidirectional USB 3 Multiplexer","description":"\u003cp\u003eThe bidirectional USB 3 Multiplexer ('mux') allows either a single USB device (or multiple devices when using a USB hub) to be switched between two USB hosts (computer) or using its bidirectional ability you can connect one of two devices to a USB host at a time.\u003c\/p\u003e\n\u003cp\u003eThe PCB is designed to fit onto the (USB\/NIC end) mounting holes of a full-sized \u003ca href=\"\/zh\/collections\/raspberry-pi-store\"\u003eRaspberry Pi\u003c\/a\u003e with a 40-pin header. This allows easy stacking when using the multiplexer with a \u003ca href=\"\/zh\/collections\/raspberry-pi-boards\"\u003eRaspberry Pi board\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThree USB3 Type-A sockets are on the multiplexer labelled A, B, and C. The multiplexer can be toggled between connecting ports A to B when pulling the S pin LOW (default) or connecting ports A to C when pulling the S pin HIGH (using a 3.3V to 5V signal).\u003c\/p\u003e\n\u003cp\u003eThe 3-pin 0.1\" header has pins for GND, S, and 3v3 which can be used to connect a manual switch if required, or you can connect the GND and S pins to a \u003ca href=\"\/zh\/collections\/adafruit-development-boards\"\u003emicrocontroller\u003c\/a\u003e to switch ports.\u003c\/p\u003e\n\u003cp\u003eWhilst there are many USB 3 Multiplexers available to share a device between USB hosts, and some of these are capable of bidirectional use, they rarely switch the power (i.e. other bidirectional multiplexers simply connect the power pins of all USB ports together which can confuse a USB device when its data lines are connected to a different USB host). With this multiplexer, the power is switched so when selecting A\u0026lt;\u0026gt;B either port can source power for the other but port C is not powered, similarly when using A\u0026lt;\u0026gt;C either port can supply power for the other but port B is not powered.\u003c\/p\u003e\n\u003cp\u003eAnother feature of this multiplexer is a power delay. When switching from A\u0026lt;\u0026gt;B to A\u0026lt;\u0026gt;C by pulling the S pin HIGH power is first disconnected between A\u0026lt;\u0026gt;B and the data lines are connected between ports A\u0026lt;\u0026gt;C. Then after a short delay the power is connected between A\u0026lt;\u0026gt;C (and vice versa when S goes LOW). Delaying the power like this when switching gives the USB device time to reset.\u003c\/p\u003e\n\u003cp\u003eTo control which USB host the USB port is connected to, set the S (SELECT) pins HIGH\/LOW as per the table below (the S pin works with a 3.3V to 5V signal).\u003c\/p\u003e\n\u003ctable width=\"343\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"126\"\u003e\u003cstrong\u003eSELECT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"217\"\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\/LOW (default)\u003c\/td\u003e\n\u003ctd\u003ePort A is connected to Port B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/HIGH\u003c\/td\u003e\n\u003ctd\u003ePort A is connected to Port C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eOnly suitable for 5V supplies with 5V devices.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen choosing USB 3 Type-A plug to plug cable(s) you MUST ensure the RX and TX pairs are crossed and VBUS is connected (if RX\/TX pairs are not crossed the cable will only work for USB2).\u003c\/p\u003e\n\u003cp\u003eAlso, be aware the multiplexer signals are switched (not repeated\/re-driven) so keeping the total cable length short (\u0026lt;2M) is a must for signal integrity. We have a \u003ca href=\"\/zh\/products\/usb-3-0-male-to-male-extension-cable\"\u003e1m USB 3.0 extension cable in our store\u003c\/a\u003e that works with the Multiplexer.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSupports USB 3 and USB 2\u003c\/li\u003e\n\u003cli\u003eBidirectional (switch 1 device to 2 hosts or 2 devices to 1 host)\u003c\/li\u003e\n\u003cli\u003eSwitches both data and power between A\u0026lt;\u0026gt;B and A\u0026lt;\u0026gt;C\u003c\/li\u003e\n\u003cli\u003ePower line disconnected for unselected port\u003c\/li\u003e\n\u003cli\u003ePower on Delay when switching port (giving the device time to reset)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Bidirectional USB 3 Multiplexer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"8086","offers":[{"title":"Default Title","offer_id":50847181603089,"sku":"105521","price":13.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/bidirectional-usb-3-multiplexer-8086-105521-71313894998401.jpg?v=1735207966","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/bidirectional-usb-3-multiplexer","provider":"Tayyab Zak","version":"1.0","type":"link"}