and VNC access enabled. This version also uses the Transmission Control Protocol (TCP) for most functions (on ports 5900 and 5988), which is designed to be more reliable than the UDP used in ARD 1. Another significant addition to ARD 2 was the Task List, that allows remote tasks to be queued and monitored, reporting their status (such as Succeeded or Failed). This release also dropped support for older versions of the Mac OS, requiring 10.2.8 or higher. On October 11, 2004, Apple released version 2.1 which improved on a number of existing features while adding the ability to view observed or controlled computers in full-screen mode, the ability to see the displays of computers with more than one monitor and support for mouse right-click and scroll-wheels. On April 29, 2005, Apple released version 2.2 which added support for Mac OS X 10.4 along with several other bug-fixes and improvements to reliability. On April 11, 2006, Apple released version 3.0 which is now a Universal Binary and features improved software upgrade functionality, Spotlight searching, as well as increased throughput and encryption for file transfers, and Automator support. On November 16, 2006, Apple released version 3.1 which provides support for the new Intel-based Xserve Lights Out Management feature. On October 18, 2007, Apple released version 3.2 which introduced Mac OS X 10.5 support and compatibility for third party VNC viewers and servers. On August 20, 2009, Apple released version 3.3 which fixed many bugs and allowed function keys and key combinations to be sent to the remote computer instead of the local machine. On January 6, 2011, Apple released version 3.4 which provides compatibility with the Mac App Store. On July 20, 2011, Apple released version 3.5 which provides compatibility with Mac OS X 10.7. On October 22, 2013, Apple released version 3.7 which provides compatibility with OS X 10.9, multiple monitors, and enhancements to remote copy/paste. On January 27, 2015, Apple released version 3.8, which primarily added support for OS X 10.10, while also including various user interface improvements, a new icon, stability improvements and the ability to update the application using the Mac App Store, even if the application was not originally installed from that source. This version now requires OS X 10.9 or later. On February 21, 2017, Apple released version 3.9, which heightened communications security between local and remote computers (including a Preferences checkbox to allow communication