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XBee Adapter Module pins



XBee Adapter Module has a socket type of K or U, and the overview page says that RXD is pin 4 and TXD is pin 5, but according to this page sockets K and U have TXD on pin 4 and RXD on pin 5.
This is a typo on XBee Adapter Module page, right?

According with the same page, the difference between K and U is that K has hardware flow control, so if i connect xbee to socket U, will i loose any kind of functionality?



everything is correct. TX from the processor mst be connected with RX of the mudule and vice versa. You can use an U socket if you do not need hardware flow control. Everthing will work fine if processor and module can receive at every time as fast as the the other side sends.