diff --git a/components/CallMethod.coffee b/components/CallMethod.coffee
index bf60e93..725a2b8 100644
--- a/components/CallMethod.coffee
+++ b/components/CallMethod.coffee
@@ -9,13 +9,22 @@ class CallMethod extends noflo.Component
     @method = null
     @args   = []
 
-    @inPorts =
-      in: new noflo.Port 'object'
-      method: new noflo.Port 'string'
-      arguments: new noflo.Port 'all'
-    @outPorts =
-      out: new noflo.Port 'all'
-      error: new noflo.Port 'string'
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object on which a method will be called'
+      method:
+        datatype: 'string'
+        description: 'Name of the method to call'
+      arguments:
+        datatype: 'all'
+        description: 'Arguments given to the method (one argument per IP)'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Value returned by the method call'
+      error:
+        datatype: 'object'
 
     @inPorts.in.on 'begingroup', (group) =>
       @outPorts.out.beginGroup group
@@ -42,7 +51,7 @@ class CallMethod extends noflo.Component
 
     @inPorts.arguments.on 'connect', =>
       @args = []
-    
+
     @inPorts.arguments.on 'data', (data) =>
       @args.push data
 
diff --git a/components/CreateDate.coffee b/components/CreateDate.coffee
index 5ca55fd..c09a5d4 100644
--- a/components/CreateDate.coffee
+++ b/components/CreateDate.coffee
@@ -4,10 +4,14 @@ class CreateDate extends noflo.Component
   description: 'Create a new Date object from string'
   icon: 'clock-o'
   constructor: ->
-    @inPorts =
-      in: new noflo.Port 'string'
-    @outPorts =
-      out: new noflo.Port 'object'
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'string'
+        description: 'A string representation of a date in RFC2822/IETF/ISO8601 format'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'A new Date object'
 
     @inPorts.in.on 'begingroup', (group) =>
       @outPorts.out.beginGroup group
diff --git a/components/CreateObject.coffee b/components/CreateObject.coffee
index 0782a09..0a92f49 100644
--- a/components/CreateObject.coffee
+++ b/components/CreateObject.coffee
@@ -2,10 +2,14 @@ noflo = require 'noflo'
 
 class CreateObject extends noflo.Component
   constructor: ->
-    @inPorts =
-      start: new noflo.Port 'bang'
-    @outPorts =
-      out: new noflo.Port 'object'
+    @inPorts = new noflo.InPorts
+      start:
+        datatype: 'bang'
+        description: 'Signal to create a new object'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'A new empty object'
 
     @inPorts.start.on 'begingroup', (group) =>
       @outPorts.out.beginGroup group
diff --git a/components/DuplicateProperty.coffee b/components/DuplicateProperty.coffee
index 9d750fc..5a7b967 100644
--- a/components/DuplicateProperty.coffee
+++ b/components/DuplicateProperty.coffee
@@ -5,12 +5,16 @@ class DuplicateProperty extends noflo.Component
     @properties = {}
     @separator = '/'
 
-    @inPorts =
-      property: new noflo.ArrayPort()
-      separator: new noflo.Port()
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      property:
+        datatype: 'all'
+      separator:
+        datatype: 'string'
+      in:
+        datatype: 'object'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
 
     @inPorts.property.on 'data', (data) =>
       @setProperty data
@@ -35,7 +39,7 @@ class DuplicateProperty extends noflo.Component
     if propParts.length > 2
       @properties[propParts.pop()] = propParts
       return
-    
+
     @properties[propParts[1]] = propParts[0]
 
   addProperties: (object) ->
diff --git a/components/Extend.coffee b/components/Extend.coffee
index 2037997..9667150 100644
--- a/components/Extend.coffee
+++ b/components/Extend.coffee
@@ -12,13 +12,23 @@ class Extend extends noflo.Component
     @key = null
     @reverse = false
 
-    @inPorts =
-      in: new noflo.Port
-      base: new noflo.Port
-      key: new noflo.Port
-      reverse: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to extend'
+      base:
+        datatype: 'object'
+        description: 'Objects to extend with (one object per IP)'
+      key:
+        datatype: 'string'
+        description: 'Property name to extend with'
+      reverse:
+        datatype: 'string'
+        description: 'A string equal "true" if you want to reverse the order of extension algorithm'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'The object received on port "in" extended'
 
     @inPorts.base.on "connect", =>
       @bases = []
diff --git a/components/ExtractProperty.coffee b/components/ExtractProperty.coffee
index 924ad30..18a1c2a 100644
--- a/components/ExtractProperty.coffee
+++ b/components/ExtractProperty.coffee
@@ -7,11 +7,17 @@ class ExtractProperty extends noflo.Component
   in the incoming object"
 
   constructor: ->
-    @inPorts =
-      in: new noflo.Port
-      key: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'An object to extract property from'
+      key:
+        datatype: 'string'
+        description: 'Property names to extract (one property per IP)'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Values of the property extracted (each value sent as a separate IP)'
 
     @inPorts.key.on "connect", =>
       @keys = []
diff --git a/components/FilterProperty.coffee b/components/FilterProperty.coffee
index 0c79ad4..e1a6dc8 100644
--- a/components/FilterProperty.coffee
+++ b/components/FilterProperty.coffee
@@ -21,16 +21,27 @@ class FilterProperty extends noflo.Component
     @accepts = []
     @regexps = []
 
-    @inPorts =
-      in: new noflo.Port
-      key: new noflo.Port
-      recurse: new noflo.Port
-      keep: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to filter properties from'
+      key:
+        datatype: 'string'
+        description: 'Keys to filter (one key per IP)'
+      recurse:
+        datatype: 'string'
+        description: '"true" to recurse on the object\'s values'
+      keep:
+        datatype: 'string'
+        description: '"true" if matching properties must be kept, otherwise removed'
       # Legacy mode
-      accept: new noflo.ArrayPort
-      regexp: new noflo.ArrayPort
-    @outPorts =
-      out: new noflo.Port
+      accept:
+        datatype: 'all'
+      regexp:
+        datatype: 'all'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
 
     @inPorts.keep.on "data", (keep) =>
       @keep = true if keep is "true"
diff --git a/components/FilterPropertyValue.coffee b/components/FilterPropertyValue.coffee
index d13d80d..3c0f2ad 100644
--- a/components/FilterPropertyValue.coffee
+++ b/components/FilterPropertyValue.coffee
@@ -6,13 +6,23 @@ class FilterPropertyValue extends noflo.Component
     @accepts = {}
     @regexps = {}
 
-    @inPorts =
-      accept: new noflo.ArrayPort 'all'
-      regexp: new noflo.ArrayPort 'string'
-      in: new noflo.Port 'object'
-    @outPorts =
-      out: new noflo.Port 'object'
-      missed: new noflo.Port 'object'
+    @inPorts = new noflo.InPorts
+      accept:
+        datatype: 'all'
+        description: ''
+      regexp:
+        datatype: 'string'
+        description: ''
+      in:
+        datatype: 'object'
+        description: 'Object to filter properties from'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object including the filtered properties'
+      missed:
+        datatype: 'object'
+        description: 'Object received as input if no key have been matched'
 
     @inPorts.accept.on 'data', (data) =>
       @prepareAccept data
diff --git a/components/FlattenObject.coffee b/components/FlattenObject.coffee
index 90bc4ce..b6ced67 100644
--- a/components/FlattenObject.coffee
+++ b/components/FlattenObject.coffee
@@ -3,11 +3,15 @@ noflo = require 'noflo'
 class FlattenObject extends noflo.Component
   constructor: ->
     @map = {}
-    @inPorts =
-      map: new noflo.ArrayPort()
-      in: new noflo.Port()
-    @outPorts =
-       out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      map:
+        datatype: 'all'
+      in:
+        datatype: 'object'
+        description: 'Object to flatten'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'array'
 
     @inPorts.map.on 'data', (data) =>
       @prepareMap data
diff --git a/components/GetObjectKey.coffee b/components/GetObjectKey.coffee
index 04121a6..62679cf 100644
--- a/components/GetObjectKey.coffee
+++ b/components/GetObjectKey.coffee
@@ -7,14 +7,26 @@ class GetObjectKey extends noflo.Component
     @data = []
     @key = []
 
-    @inPorts =
-      in: new noflo.Port 'object'
-      key: new noflo.ArrayPort 'string'
-      sendgroup: new noflo.Port 'boolean'
-    @outPorts =
-      out: new noflo.Port 'all'
-      object: new noflo.Port 'object'
-      missed: new noflo.Port 'object'
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to get keys from'
+      key:
+        datatype: 'string'
+        description: 'Keys to extract from the object (one key per IP)'
+      sendgroup:
+        datatype: 'boolean'
+        description: 'true to send keys as groups around value IPs, false otherwise'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Values extracts from the input object given the input keys (one value per IP, potentially grouped using the key names)'
+      object:
+        datatype: 'object'
+        description: 'Object forwarded from input if at least one property matches the input keys'
+      missed:
+        datatype: 'object'
+        description: 'Object forwarded from input if no property matches the input keys'
 
     @inPorts.in.on 'connect', =>
       @data = []
@@ -30,7 +42,7 @@ class GetObjectKey extends noflo.Component
         # Data already sent
         @outPorts.out.disconnect()
         return
-      
+
       # No key, data will be sent when we get it
       return unless @key.length
 
diff --git a/components/InsertProperty.coffee b/components/InsertProperty.coffee
index edd47fb..f1a4694 100644
--- a/components/InsertProperty.coffee
+++ b/components/InsertProperty.coffee
@@ -8,11 +8,17 @@ class InsertProperty extends noflo.Component
   constructor: ->
     @properties = {}
 
-    @inPorts =
-      in: new noflo.Port
-      property: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to insert property into'
+      property:
+        datatype: 'all'
+        description: 'Property to insert (property sent as group, value sent as IP)'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object received as input with added properties'
 
     @inPorts.property.on "connect", =>
       @properties = {}
diff --git a/components/Join.coffee b/components/Join.coffee
index d02d00e..2a63938 100644
--- a/components/Join.coffee
+++ b/components/Join.coffee
@@ -9,11 +9,17 @@ class Join extends noflo.Component
   constructor: ->
     @delimiter = ","
 
-    @inPorts =
-      in: new noflo.Port
-      delimiter: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to join values from'
+      delimiter:
+        datatype: 'string'
+        description: 'Delimiter to join values'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'string'
+        description: 'String conversion of all values joined with delimiter into one string'
 
     @inPorts.delimiter.on "data", (@delimiter) =>
 
diff --git a/components/Keys.coffee b/components/Keys.coffee
index 0e7ae01..3449e72 100644
--- a/components/Keys.coffee
+++ b/components/Keys.coffee
@@ -6,10 +6,14 @@ class Keys extends noflo.Component
   description: "gets only the keys of an object and forward them as an array"
 
   constructor: ->
-    @inPorts =
-      in: new noflo.Port 'object'
-    @outPorts =
-      out: new noflo.Port 'all'
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to get keys from'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'string'
+        description: 'Keys from the incoming object (one per IP)'
 
     @inPorts.in.on "begingroup", (group) =>
       @outPorts.out.beginGroup(group)
diff --git a/components/MapProperty.coffee b/components/MapProperty.coffee
index 5642a83..8af828e 100644
--- a/components/MapProperty.coffee
+++ b/components/MapProperty.coffee
@@ -5,12 +5,16 @@ class MapProperty extends noflo.Component
     @map = {}
     @regexps = {}
 
-    @inPorts =
-      map: new noflo.ArrayPort()
-      regexp: new noflo.ArrayPort()
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      map:
+        datatype: 'all'
+      regexp:
+        datatype: 'string'
+      in:
+        datatype: 'object'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
 
     @inPorts.map.on 'data', (data) =>
       @prepareMap data
diff --git a/components/MapPropertyValue.coffee b/components/MapPropertyValue.coffee
index c45a713..0e0e1db 100644
--- a/components/MapPropertyValue.coffee
+++ b/components/MapPropertyValue.coffee
@@ -7,12 +7,16 @@ class MapPropertyValue extends noflo.Component
     @regexpAny = {}
     @regexp = {}
 
-    @inPorts =
-      map: new noflo.ArrayPort()
-      regexp: new noflo.ArrayPort()
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      map:
+        datatype: 'all'
+      regexp:
+        datatype: 'string'
+      in:
+        datatype: 'object'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
 
     @inPorts.map.on 'data', (data) =>
       @prepareMap data
diff --git a/components/MergeObjects.coffee b/components/MergeObjects.coffee
index 09c4c83..3debde8 100644
--- a/components/MergeObjects.coffee
+++ b/components/MergeObjects.coffee
@@ -8,10 +8,14 @@ class MergeObjects extends noflo.Component
   constructor: ->
     @merge = _.bind @merge, this
 
-    @inPorts =
-      in: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Objects to merge (one per IP)'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'A new object containing the merge of input objects'
 
     @inPorts.in.on "connect", () =>
       @groups = []
diff --git a/components/RemoveProperty.coffee b/components/RemoveProperty.coffee
index 050ce48..ce49b7d 100644
--- a/components/RemoveProperty.coffee
+++ b/components/RemoveProperty.coffee
@@ -5,11 +5,17 @@ class RemoveProperty extends noflo.Component
   icon: 'ban'
   constructor: ->
     @properties = []
-    @inPorts =
-      in: new noflo.Port()
-      property: new noflo.ArrayPort()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to remove properties from'
+      property:
+        datatype: 'string'
+        description: 'Properties to remove (one per IP)'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object forwarded from input'
 
     @inPorts.property.on 'data', (data) =>
       @properties.push data
diff --git a/components/ReplaceKey.coffee b/components/ReplaceKey.coffee
index beb6887..60a7e51 100644
--- a/components/ReplaceKey.coffee
+++ b/components/ReplaceKey.coffee
@@ -8,11 +8,16 @@ class ReplaceKey extends noflo.Component
   constructor: ->
     @patterns = {}
 
-    @inPorts =
-      in: new noflo.Port
-      pattern: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to replace a key from'
+      pattern:
+        datatype: 'all'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object forwared from input'
 
     @inPorts.pattern.on "data", (@patterns) =>
 
diff --git a/components/SetProperty.coffee b/components/SetProperty.coffee
index 7d111c1..a70546d 100644
--- a/components/SetProperty.coffee
+++ b/components/SetProperty.coffee
@@ -4,11 +4,16 @@ class SetProperty extends noflo.Component
   constructor: ->
     @properties = {}
 
-    @inPorts =
-      property: new noflo.ArrayPort()
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      property:
+        datatype: 'all'
+      in:
+        datatype: 'object'
+        description: 'Object to set property on'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object forwared from input'
 
     @inPorts.property.on 'data', (data) =>
       @setProperty data
diff --git a/components/SetPropertyValue.coffee b/components/SetPropertyValue.coffee
index 13233ca..7532db4 100644
--- a/components/SetPropertyValue.coffee
+++ b/components/SetPropertyValue.coffee
@@ -8,14 +8,24 @@ class SetPropertyValue extends noflo.Component
     @groups = []
     @keep = false
 
-    @inPorts =
-      property: new noflo.Port 'string'
-      value: new noflo.Port 'all'
-      in: new noflo.Port 'object'
+    @inPorts = new noflo.InPorts
+      property:
+        datatype: 'string'
+        description: 'Property name to set value on'
+      value:
+        datatype: 'all'
+        description: 'Property value to set'
+      in:
+        datatype: 'object'
+        description: 'Object to set property value on'
       # Persist value
-      keep: new noflo.Port 'boolean'
-    @outPorts =
-      out: new noflo.Port 'object'
+      keep:
+        datatype: 'boolean'
+        description: 'true if input value must be kept around, false to drop it after the value is set'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'object'
+        description: 'Object forwarded from the input'
 
     @inPorts.keep.on 'data', (keep) =>
       @keep = String(keep) is 'true'
diff --git a/components/SimplifyObject.coffee b/components/SimplifyObject.coffee
index caaa258..0b15d95 100644
--- a/components/SimplifyObject.coffee
+++ b/components/SimplifyObject.coffee
@@ -3,10 +3,14 @@ noflo = require 'noflo'
 
 class SimplifyObject extends noflo.Component
   constructor: ->
-    @inPorts =
-      in: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'all'
+        description: 'Object to simplify'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Simplified object'
 
     @inPorts.in.on 'beginGroup', (group) =>
       @outPorts.out.beginGroup group
diff --git a/components/Size.coffee b/components/Size.coffee
index 4123348..438ebda 100644
--- a/components/Size.coffee
+++ b/components/Size.coffee
@@ -6,10 +6,14 @@ class Size extends noflo.Component
   description: "gets the size of an object and sends that out as a number"
 
   constructor: ->
-    @inPorts =
-      in: new noflo.Port 'object'
-    @outPorts =
-      out: new noflo.Port 'int'
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to measure the size of'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'int'
+        description: 'Size of the input object'
 
     @inPorts.in.on "begingroup", (group) =>
       @outPorts.out.beginGroup(group)
diff --git a/components/SliceArray.coffee b/components/SliceArray.coffee
index 8cf8b9d..b762576 100644
--- a/components/SliceArray.coffee
+++ b/components/SliceArray.coffee
@@ -5,13 +5,22 @@ class SliceArray extends noflo.Component
     @begin = 0
     @end = null
 
-    @inPorts =
-      in: new noflo.Port()
-      begin: new noflo.Port()
-      end: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'array'
+        description: 'Array to slice'
+      begin:
+        datatype: 'number'
+        description: 'Beginning of the slicing'
+      end:
+        datatype: 'number'
+        description: 'End of the slicing'
     @outPorts =
-      out: new noflo.Port()
-      error: new noflo.Port()
+      out:
+        datatype: 'array'
+        description: 'Result of the slice operation'
+      error:
+        datatype: 'string'
 
     @inPorts.begin.on 'data', (data) =>
       @begin = data
diff --git a/components/SplitArray.coffee b/components/SplitArray.coffee
index 28b9368..d6ef5b8 100644
--- a/components/SplitArray.coffee
+++ b/components/SplitArray.coffee
@@ -2,10 +2,12 @@ noflo = require 'noflo'
 
 class SplitArray extends noflo.Component
   constructor: ->
-    @inPorts =
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.ArrayPort()
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'all'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
 
     @inPorts.in.on 'begingroup', (group) =>
       @outPorts.out.beginGroup group
diff --git a/components/SplitObject.coffee b/components/SplitObject.coffee
index 17e0609..e0a1c9c 100644
--- a/components/SplitObject.coffee
+++ b/components/SplitObject.coffee
@@ -6,10 +6,14 @@ class SplitObject extends noflo.Component
     wrapped with the key as the group"
 
   constructor: ->
-    @inPorts =
-      in: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'object'
+        description: 'Object to split key/values from'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Values from the input object (one value per IP and its key sent as group)'
 
     @inPorts.in.on "begingroup", (group) =>
       @outPorts.out.beginGroup(group)
diff --git a/components/UniqueArray.coffee b/components/UniqueArray.coffee
index 900b297..8722c72 100644
--- a/components/UniqueArray.coffee
+++ b/components/UniqueArray.coffee
@@ -2,10 +2,14 @@ noflo = require 'noflo'
 
 class UniqueArray extends noflo.Component
   constructor: ->
-    @inPorts =
-      in: new noflo.Port()
-    @outPorts =
-      out: new noflo.Port()
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'array'
+        description: 'Array to get unique values from'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'array'
+        description: 'Array containing only unique values from the input array'
 
     @inPorts.in.on 'data', (data) =>
       @outPorts.out.send @unique data
diff --git a/components/Values.coffee b/components/Values.coffee
index f98d066..225de5e 100644
--- a/components/Values.coffee
+++ b/components/Values.coffee
@@ -6,10 +6,14 @@ class Values extends noflo.Component
   description: "gets only the values of an object and forward them as an array"
 
   constructor: ->
-    @inPorts =
-      in: new noflo.Port
-    @outPorts =
-      out: new noflo.Port
+    @inPorts = new noflo.InPorts
+      in:
+        datatype: 'all'
+        description: 'Object to extract values from'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'all'
+        description: 'Values extracted from the input object (one value per IP)'
 
     @inPorts.in.on "begingroup", (group) =>
       @outPorts.out.beginGroup(group)
diff --git a/spec/FilterPropertyValue.coffee b/spec/FilterPropertyValue.coffee
index 706ce9e..29055e5 100644
--- a/spec/FilterPropertyValue.coffee
+++ b/spec/FilterPropertyValue.coffee
@@ -13,10 +13,10 @@ describe 'FilterPropertyValue component', ->
 
   beforeEach ->
     c = FilterPropertyValue.getComponent()
-    c.inPorts.in.attach noflo.internalSocket.createSocket()
-    c.outPorts.out.attach noflo.internalSocket.createSocket()
-    ins = c.inPorts.in
-    out = c.outPorts.out
+    ins = noflo.internalSocket.createSocket()
+    out = noflo.internalSocket.createSocket()
+    c.inPorts.in.attach ins
+    c.outPorts.out.attach out
 
   describe 'when instantiated', ->
     it 'should have input ports', ->
diff --git a/spec/FlattenObject.coffee b/spec/FlattenObject.coffee
index 9edbb11..c3ceba9 100644
--- a/spec/FlattenObject.coffee
+++ b/spec/FlattenObject.coffee
@@ -14,12 +14,12 @@ describe 'FlattenObject component', ->
 
   beforeEach ->
     c = FlattenObject.getComponent()
-    c.inPorts.in.attach noflo.internalSocket.createSocket()
-    c.inPorts.map.attach noflo.internalSocket.createSocket()
-    c.outPorts.out.attach noflo.internalSocket.createSocket()
-    ins = c.inPorts.in
-    map = c.inPorts.map
-    out = c.outPorts.out
+    ins = noflo.internalSocket.createSocket()
+    map = noflo.internalSocket.createSocket()
+    out = noflo.internalSocket.createSocket()
+    c.inPorts.in.attach ins
+    c.inPorts.map.attach map
+    c.outPorts.out.attach out
 
   describe 'when instantiated', ->
     it 'should have input ports', ->
diff --git a/spec/MapProperty.coffee b/spec/MapProperty.coffee
index f16532c..d6557f7 100644
--- a/spec/MapProperty.coffee
+++ b/spec/MapProperty.coffee
@@ -14,12 +14,12 @@ describe 'MapProperty component', ->
 
   beforeEach ->
     c = MapProperty.getComponent()
-    c.inPorts.in.attach noflo.internalSocket.createSocket()
-    c.inPorts.map.attach noflo.internalSocket.createSocket()
-    c.outPorts.out.attach noflo.internalSocket.createSocket()
-    ins = c.inPorts.in
-    map = c.inPorts.map
-    out = c.outPorts.out
+    ins = noflo.internalSocket.createSocket()
+    map = noflo.internalSocket.createSocket()
+    out = noflo.internalSocket.createSocket()
+    c.inPorts.in.attach ins
+    c.inPorts.map.attach map
+    c.outPorts.out.attach out
 
   describe 'when instantiated', ->
     it 'should have input ports', ->