+.BR "\-d, \-\-device " <device>
+The device to use for acquisition. It can be specified by ID as reported by
+.BR "\-\-list\-devices" ,
+or by the name of the driver as reported by
+.BR \-\-version .
+.sp
+A device can optionally be followed by a colon-separated list of device
+options, where each option takes the form
+.BR key=value .
+For example, to set the samplerate on the first device you might specify
+.sp
+.RB " $ " "sigrok\-cli \-d 0:samplerate=1m"
+.sp
+Samplerate is an option common to most devices. The argument specifies the
+samplerate in Hz. You can also specify the samplerate in kHz, MHz or GHz.
+The following are all equivalent:
+.sp
+.RB " $ " "sigrok\-cli \-\-samples 100 \-d 0:samplerate=1000000"
+.sp
+.RB " $ " "sigrok\-cli \-\-samples 100 \-d 0:samplerate=1m"
+.sp
+.RB " $ " "sigrok\-cli \-\-samples 100 \-d ""0:samplerate=1 MHz""
+.TP