diff --git a/backend/dll.conf.in b/backend/dll.conf.in
index 3ee542815..8d459ab7b 100644
--- a/backend/dll.conf.in
+++ b/backend/dll.conf.in
@@ -73,6 +73,7 @@ plustek
 #pnm
 qcam
 ricoh
+ricoh2
 rts8891
 s9036
 sceptre
diff --git a/backend/ricoh2.c b/backend/ricoh2.c
index 616b71969..6c7403a77 100644
--- a/backend/ricoh2.c
+++ b/backend/ricoh2.c
@@ -106,6 +106,18 @@ typedef struct Ricoh2_Device {
 }
 Ricoh2_Device;
 
+typedef struct Ricoh2_device_info {
+  SANE_Int          product_id;
+  SANE_String_Const device_name;
+}
+Ricoh2_device_info;
+
+static Ricoh2_device_info supported_devices[] = {
+  { 0x042c, "Aficio SP100SU"   },
+  { 0x0438, "Aficio SG3100SNw" },
+  { 0x0448, "Aficio SP111SU"   }
+};
+
 static SANE_String_Const mode_list[] = {
   SANE_VALUE_SCAN_MODE_COLOR,
   SANE_VALUE_SCAN_MODE_GRAY,
@@ -137,14 +149,18 @@ lookup_handle(SANE_Handle handle)
   return NULL;
 }
 
-static const char* get_model_by_productid(SANE_Int id)
+static SANE_String_Const get_model_by_productid(SANE_Int id)
 {
-  switch (id)
+  size_t i = 0;
+  for (; i < sizeof (supported_devices) / sizeof (supported_devices[0]); ++i)
     {
-    case 0x0448: return "Aficio SP111SU";
-    case 0x042c: return "Aficio SP100SU";
-    default:     return "Unidentified device";
+      if (supported_devices[i].product_id == id)
+        {
+          return supported_devices[i].device_name;
+        }
     }
+
+  return "Unidentified device";
 }
 
 static SANE_Status
@@ -261,6 +277,8 @@ init_options(Ricoh2_Device *dev)
 SANE_Status
 sane_init (SANE_Int *vc, SANE_Auth_Callback __sane_unused__ cb)
 {
+  size_t i = 0;
+
   DBG_INIT ();
 
   DBG(2, "sane_init\n");
@@ -269,8 +287,11 @@ sane_init (SANE_Int *vc, SANE_Auth_Callback __sane_unused__ cb)
   sanei_usb_set_timeout (USB_TIMEOUT_MS);
 
   num_devices = 0;
-  sanei_usb_find_devices (0x5ca, 0x042c, attach);
-  sanei_usb_find_devices (0x5ca, 0x0448, attach);
+
+  for (; i < sizeof (supported_devices) / sizeof (supported_devices[0]); ++i)
+    {
+      sanei_usb_find_devices (0x5ca, supported_devices[i].product_id, attach);
+    }
 
   if (vc)
     *vc = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, 0);
diff --git a/doc/Makefile.in b/doc/Makefile.in
index b2440f69d..5028adf08 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -416,7 +416,7 @@ BACKEND_5MANS = sane-abaton.5 sane-agfafocus.5 sane-apple.5 sane-as6e.5 \
 	sane-nec.5 sane-net.5 sane-pie.5 sane-pieusb.5 sane-pint.5 sane-pnm.5 \
 	sane-umax.5 sane-qcam.5 sane-scsi.5 sane-artec.5 sane-kodak.5 sane-kodakaio.5 \
 	sane-fujitsu.5 sane-sharp.5 sane-s9036.5 sane-tamarack.5 \
-	sane-ricoh.5 sane-ricoh.5 sane-avision.5 sane-plustek.5 sane-st400.5 \
+	sane-ricoh.5 sane-ricoh2.5 sane-avision.5 sane-plustek.5 sane-st400.5 \
 	sane-mustek_pp.5 sane-dc210.5 sane-v4l.5 sane-snapscan.5 \
 	sane-canon.5 sane-coolscan.5 sane-bh.5 sane-dc240.5 \
 	sane-umax_pp.5 sane-umax1220u.5 sane-sm3600.5 sane-usb.5 \
diff --git a/doc/descriptions/ricoh2.desc b/doc/descriptions/ricoh2.desc
index 585d9e892..55ee3721e 100644
--- a/doc/descriptions/ricoh2.desc
+++ b/doc/descriptions/ricoh2.desc
@@ -24,17 +24,17 @@
 :mfg "Ricoh"                      ; name a manufacturer
 :url "http://www.ricoh.com/"      ; manufacturer's URL
 
-:model "SP-111SU"                 ; name models for above-specified mfg.
-:status :basic                    ; :minimal, :basic, :good, :complete
-                                  ; :untested, or :unsupported
-:interface "USB"                  ; interface type of the device:
-                                  ; "SCSI", "USB", "Parport (EPP)",
-                                  ; "Parport (SPP)", "Parport (ECP)",
-                                  ; "Serial port", "IEEE-1394", "JetDirect",
-                                  ; or "Proprietary".
-:usbid "0x05ca" "0x0448"          ; Vendor and product ids of an USB device
+:model "SG-3100SNw"
+:status :basic
+:interface "USB"
+:usbid "0x05ca" "0x0438"
 
 :model "SP-100SU"
 :status :untested
 :interface "USB"
 :usbid "0x05ca" "0x042c"
+
+:model "SP-111SU"
+:status :basic
+:interface "USB"
+:usbid "0x05ca" "0x0448"
diff --git a/doc/sane-ricoh2.man b/doc/sane-ricoh2.man
index e32026674..86db7c6a7 100644
--- a/doc/sane-ricoh2.man
+++ b/doc/sane-ricoh2.man
@@ -9,10 +9,11 @@ library implements a SANE (Scanner Access Now Easy) backend that
 provides access to the following Ricoh flatbed scanners:
 .PP
 .RS
+SG-3100SNw
+.br
 SP-100SU
 .br
 SP-111SU
-.br
 .RE
 .PP
 .SH FILES
@@ -51,6 +52,6 @@ environment variable controls the debug level for this backend. Higher
 debug levels increase the verbosity of the output.
 
 .SH "SEE ALSO"
-sane(7), sane\-scsi(5)
+sane(7), sane\-usb(5)
 .SH AUTHOR
 Stanislav Yuzvinsky
diff --git a/doc/sane.man b/doc/sane.man
index 1ba03cd0a..a9fd50a37 100644
--- a/doc/sane.man
+++ b/doc/sane.man
@@ -450,7 +450,7 @@ for details.
 .TP
 .B ricoh2
 The ricoh2 backend provides access to the following Ricoh flatbed
-scanners: SP-100SU and SP-111SU. See
+scanners: SG-3100SNw, SP-100SU, and SP-111SU. See
 .BR sane\-ricoh2 (5)
 for details.
 .TP