+@deffn {Config Command} {adapter serial} serial_string
+Specifies the @var{serial_string} of the adapter to use.
+If this command is not specified, serial strings are not checked.
+Only the following adapter drivers use the serial string from this command:
+cmsis_dap, ft232r, ftdi, kitprog.
+The following adapters have their own command to specify the serial string:
+hla, jlink, presto, st-link, vsllink, xds110.
+@end deffn
+