diff --git a/driveAtlas.sh b/driveAtlas.sh
index 221d7bd..24461c9 100644
--- a/driveAtlas.sh
+++ b/driveAtlas.sh
@@ -1349,7 +1349,7 @@ generate_zimaboard_layout() {
     local S=5 Wi=44 FL=16          # oblique depth, front interior width, front-left col
     local BL=$((FL-S)) FR=$((FL+Wi+1))
     local BR=$((FR-S))             # NB: separate statement; FR is not visible in its own `local`
-    local R0=2 HC=3 FE FB LEG HEIGHT
+    local R0=2 HC=5 FE FB LEG HEIGHT
     FE=$((R0+S)); FB=$((FE+HC+1)); LEG=$((FB+3)); HEIGHT=$((LEG+6))
 
     # dual grid: Gc = glyphs, Gk = per-cell colour key ('.' = default)
@@ -1430,19 +1430,35 @@ generate_zimaboard_layout() {
     _zp $((FE-2)) $((FL+2)) '┌─────┐' D
     _zp $((FE-1)) $((FL+2)) '└─────┘' D
 
-    # --- two-tier front I/O:  mDP | [GbE over USB] | DC --------------------
-    local cx=$((FL + Wi/2 - 1))
-    _zp $((FE+1)) $((cx-2)) '▐▌' C ; _zp $((FE+1)) $((cx+1)) '▐▌' C   # upper: 2x 1GbE
-    _zp $((FE+2)) $((cx-2)) '▐▌' B ; _zp $((FE+2)) $((cx+1)) '▐▌' B   # lower: 2x USB 3.0
-    _zp $((FE+2)) $((FL+3)) '▐▌' S                                    # mDP  (left)
-    _zp $((FE+2)) $((FR-5)) '▐▌' S                                    # DC   (right)
-    _zp $((FE+3)) $((FL+3)) 'mDP'     D
-    _zp $((FE+3)) $((cx-3)) 'GbE/USB' D
-    _zp $((FE+3)) $((FR-7)) 'DC 12V'  D
+    # --- front I/O ---------------------------------------------------------
+    # Centre: ONE shared housing with 2x RJ45 sitting directly on top of 2x USB.
+    #   RJ45  ██▄██  solid jack, notch cut into the top centre = latch slot
+    #   USB-A █▀▀▀█  side walls + tongue bar filling the upper half
+    local MX=32
+    _zp $((FE+1)) "$MX"      '┌─────┬─────┐' H
+    _zp $((FE+2)) "$MX"      '│'     H
+    _zp $((FE+2)) $((MX+1))  '██▄██' C
+    _zp $((FE+2)) $((MX+6))  '│'     H
+    _zp $((FE+2)) $((MX+7))  '██▄██' C
+    _zp $((FE+2)) $((MX+12)) '│'     H
+    _zp $((FE+3)) "$MX"      '│'     H
+    _zp $((FE+3)) $((MX+1))  '█▀▀▀█' B
+    _zp $((FE+3)) $((MX+6))  '│'     H
+    _zp $((FE+3)) $((MX+7))  '█▀▀▀█' B
+    _zp $((FE+3)) $((MX+12)) '│'     H
+    _zp $((FE+4)) "$MX"      '└─────┴─────┘' H
+    _zp $((FE+2)) $((MX-5))  'GbE'   D
+    _zp $((FE+3)) $((MX-5))  'USB'   D
+    # Mini-DisplayPort (left, lower tier): chamfered slot, not a plain box
+    _zp $((FE+3)) 20 '╱██╲'   S
+    _zp $((FE+4)) 20 'mDP'    D
+    # DC 12V barrel jack (right, lower tier): round housing + centre pin
+    _zp $((FE+3)) 52 '(█)'    S
+    _zp $((FE+4)) 50 'DC 12V' D
 
     # --- open-ended PCIe x4 card edge out the LEFT side --------------------
     _zp $((FE+1)) 0 'PCIe x4 ' D
-    _zp $((FE+1)) 8 '▐▓▓▓▌'    C
+    _zp $((FE+1)) 8 '▐▓▓┤'     C
 
     # --- rubber feet -------------------------------------------------------
     _zp $((FB+1)) $((FL+1)) '╹' D