diff --git a/inventoryManager.lua b/inventoryManager.lua
index 725371b..8eb4042 100644
--- a/inventoryManager.lua
+++ b/inventoryManager.lua
@@ -194,28 +194,50 @@ local function main()
         log.warn("INIT", "No smelter monitor on %s", cfg.SMELTER_MONITOR_SIDE)
     end
 
-    -- Find modem for client communication
+    -- Find wired modem for client/turtle communication
     for _, name in ipairs(peripheral.getNames()) do
         if peripheral.getType(name) == "modem" then
-            ctx.networkModem = peripheral.wrap(name)
-            ctx.networkModemName = name
-            ctx.networkModem.open(cfg.ORDER_CHANNEL)
-            ctx.networkModem.open(cfg.CRAFT_REPLY_CHANNEL)
-            ctx.networkModem.open(cfg.SYSTEM_CHANNEL)
-            break
+            local m = peripheral.wrap(name)
+            -- Prefer wired modem (has getNameLocal); skip wireless
+            if m.isWireless and not m.isWireless() then
+                ctx.networkModem = m
+                ctx.networkModemName = name
+                ctx.networkModem.open(cfg.ORDER_CHANNEL)
+                ctx.networkModem.open(cfg.CRAFT_REPLY_CHANNEL)
+                ctx.networkModem.open(cfg.SYSTEM_CHANNEL)
+                break
+            elseif not ctx.networkModem then
+                -- Fallback: use wireless if no wired available
+                ctx.networkModem = m
+                ctx.networkModemName = name
+            end
         end
     end
     if ctx.networkModem then
-        log.info("INIT", "Network modem: %s", ctx.networkModemName)
+        -- Ensure channels are open even on fallback modem
+        ctx.networkModem.open(cfg.ORDER_CHANNEL)
+        ctx.networkModem.open(cfg.CRAFT_REPLY_CHANNEL)
+        ctx.networkModem.open(cfg.SYSTEM_CHANNEL)
+        log.info("INIT", "Network modem: %s (wired=%s)", ctx.networkModemName,
+            tostring(ctx.networkModem.isWireless and not ctx.networkModem.isWireless()))
     else
         log.warn("INIT", "No modem found for client sync")
     end
 
-    -- Detect crafting turtle on network
+    -- Detect crafting turtle on network (must have craft() method)
     for _, name in ipairs(peripheral.getNames()) do
         if name:match("^turtle_") then
-            ctx.craftTurtleName = name
-            break
+            local methods = peripheral.getMethods(name)
+            if methods then
+                local hasCraft = false
+                for _, m in ipairs(methods) do
+                    if m == "craft" then hasCraft = true; break end
+                end
+                if hasCraft then
+                    ctx.craftTurtleName = name
+                    break
+                end
+            end
         end
     end
     if ctx.craftTurtleName then