To change the I/O mode of one of these VIs to synchronous, right-click on the VI in LabVIEW and select
Synchronous I/O Mode»Synchronous, as shown in the image below.
![](/servlet/rtaImage?eid=ka0VU0000002agv&feoid=00N3q00000HUsuI&refid=0EM0Z000000W8zh)
Note that the small stopwatch graphic in the corner of the VI will disappear when the VI is set to synchronous.
![](/servlet/rtaImage?eid=ka0VU0000002agv&feoid=00N3q00000HUsuI&refid=0EM0Z000000W8zm)
For more details on whether synchronous or asynchronous is better for your application, see the Details section of the help documentation for the VI you are using, linked below.