diff --git a/source/components/device_tracker.aruba.markdown b/source/components/device_tracker.aruba.markdown
index 1e80014ee9d..4e43c3fe5af 100644
--- a/source/components/device_tracker.aruba.markdown
+++ b/source/components/device_tracker.aruba.markdown
@@ -10,7 +10,11 @@ footer: true
 ---
 
 <img src='/images/supported_brands/aruba.png' class='brand pull-right' />
-This platform allows you to detect presence by looking at connected devices to an [Aruba Instant](http://www.arubanetworks.com/products/networking/aruba-instant/) device. This has been tested on an ARUBA AP-105.
+This platform allows you to detect presence by looking at connected devices to an [Aruba Instant](http://www.arubanetworks.com/products/networking/aruba-instant/) device.
+
+Supported devices (tested):
+
+- ARUBA AP-105
 
 <p class='note warning'>
 This device tracker needs telnet to be enabled on the router.
@@ -25,5 +29,11 @@ device_tracker:
   password: YOUR_ADMIN_PASSWORD
 ```
 
+Configuration variables:
+
+- **host** *Required*: The IP address of your router, e.g. 192.168.1.1.
+- **username** *Required*: The username of an user with administrative privileges, usually *admin*.
+- **password** *Required*: The password for your given admin account.
+
 See the [device tracker component page](/components/device_tracker.html) for instructions how to configure the people to be tracked.