-2 different transport layers are used:
-. STLINKv1 uses SCSI passthru commands over USB,
-. STLINKv2 uses raw USB commands.
+* STLINKv1, present on STM32VL discovery kits,
+* STLINKv2, present on STM32L discovery and later kits.
+
+Two different transport layers are used:
+
+* STLINKv1 uses SCSI passthru commands over USB
+* STLINKv2 uses raw USB commands.
+
+## Common requirements