diff --git a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_full/lofar2_unb2c_sdp_station_full.vhd b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_full/lofar2_unb2c_sdp_station_full.vhd
index 0cb79ffa8d282485cbfc55251f525e82e892af25..bbbc8a82eef50ed16480476f7e03f31e83dc0e42 100644
--- a/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_full/lofar2_unb2c_sdp_station_full.vhd
+++ b/applications/lofar2/designs/lofar2_unb2c_sdp_station/revisions/lofar2_unb2c_sdp_station_full/lofar2_unb2c_sdp_station_full.vhd
@@ -68,13 +68,22 @@ ENTITY lofar2_unb2c_sdp_station_full IS
     -- Transceiver clocks
     SA_CLK        : IN    STD_LOGIC := '0'; -- Clock 10GbE front (qsfp) and ring lines
 
-    -- front transceivers
-    QSFP_1_RX     : IN    STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0) := (OTHERS=>'0');
-    QSFP_1_TX     : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0);
+    -- front transceivers QSFP0 for Ring.
+    QSFP_0_RX     : IN    STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 downto 0) := (OTHERS=>'0');
+    QSFP_0_TX     : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 downto 0);
 
+    -- front transceivers QSFP1 for 10GbE output to CEP.
+    QSFP_1_RX     : IN    STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 downto 0) := (OTHERS=>'0');
+    QSFP_1_TX     : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 downto 0);
     -- LEDs
     QSFP_LED     : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp_nof_leds-1 DOWNTO 0);
 
+    -- ring transceivers
+    RING_0_RX    : IN    STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0) := (OTHERS => '0'); -- Using qsfp bus width also for ring interfaces
+    RING_0_TX    : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0);
+    RING_1_RX    : IN    STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0) := (OTHERS=>'0');
+    RING_1_TX    : OUT   STD_LOGIC_VECTOR(c_unb2c_board_tr_qsfp.bus_w-1 DOWNTO 0);
+
      -- back transceivers (note only 12 are used in unb2c)
     BCK_RX       : IN    STD_LOGIC_VECTOR(c_unb2c_board_nof_tr_jesd204b-1 DOWNTO 0);  -- c_unb2c_board_nof_tr_jesd204b = c_sdp_S_pn = 12
     BCK_REF_CLK  : IN    STD_LOGIC; -- Use as JESD204B_REFCLK
@@ -130,13 +139,22 @@ BEGIN
     -- Transceiver clocks
     SA_CLK       => SA_CLK,
 
-    -- front transceivers
+    -- front transceivers QSFP0 for Ring.
+    QSFP_0_RX    => QSFP_0_RX,   
+    QSFP_0_TX    => QSFP_0_TX,   
+
+    -- front transceivers QSFP1 for 10GbE output to CEP.
     QSFP_1_RX    => QSFP_1_RX, 
     QSFP_1_TX    => QSFP_1_TX,
-
     -- LEDs
     QSFP_LED     => QSFP_LED,
 
+    -- ring transceivers
+    RING_0_RX    => RING_0_RX,
+    RING_0_TX    => RING_0_TX,
+    RING_1_RX    => RING_1_RX,
+    RING_1_TX    => RING_1_TX,
+
     -- back transceivers
     JESD204B_SERIAL_DATA   => JESD204B_SERIAL_DATA,
     JESD204B_REFCLK        => JESD204B_REFCLK,