Updated status of Samsung backend support.

unsupported/xerox-workcentre-pe16.html

@@ -36,13 +36,15 @@
     <h2>Comments</h2>
     <p>
       At least the Samsung SCX-4216F should work with the external samsung
-      backend (libsane-samsung_scx4x16). It's unkwon if the Xerox also works.
+      backend (libsane-samsung_scx4x16). The Xerox doesn't seem to work with
+      that backend.
     </p>
     <p>
       The Xerox PE16 is an identical clone to the machine called "Samsung
       SCX-4216F". The Xerox machine differs from the Samsung one only by
       front-side sticker.  Samsung is a primary manufacturer, though Xerox sells
-      more units (probably). However, the USB descriptors are different?
+      more units (probably). However, the USB descriptors are different and the
+      Samsung backend doesn't seem to work.
     </p>
     <h2>Output of /proc/bus/usb/devices or sane-find-scanner -v -v</h2>
     <pre>