are there any additional hard components which comes with this device?
Smart Cover,  dock connector,  headphone jack are some of them
IPad 2
The Smart Cover, first introduced with the iPad 2, is a screen protector that magnetically attaches to the face of the iPad. The cover has three folds which allow it to convert into a stand, which is also held together by magnets. While original iPad owners could purchase a black case that included a similarly folding cover, the Smart Cover is meant to be more minimal, easily detachable, and protects only the screen. Smart Covers have a microfiber bottom that cleans the front of the iPad, and wakes up the iPad when the cover is removed. There are five different colors of both polyurethane and leather, with leather being more expensive than the polyurethane version.

Apple offers several more accessories for the iPad 2, most of which are adapters for the proprietary 30-pin dock connector, the iPad's only port besides the headphone jack. A dock holds the iPad upright at an angle, and has a dock connector and audio line out port. The iPad can use Bluetooth keyboards that also work with Ma
when did the 2nd generation ipad come out March 2, 2011 what type of device is this? It is a tablet designed, developed and marketed by Apple Inc. what are some of the software features of this device? It comes with iOS 4.3,  Safari, Mail, Photos, Video, Music, iTunes (store), Maps, Notes, Calendar, Photo Booth, and Contacts, etc. what are some of the hardware components of this device? It consists of an Apple A5 package-on-package (PoP) System-on-chip (SoC), which comprises a 1 GHz dual-core 32-bit Cortex-A9 CPU, 512 MB of RAM and a dual-core PowerVR SGX543MP2 GPU
wiki:12901452
IPad 2 [SEP] Accessories
The Smart Cover, first introduced with the iPad 2, is a screen protector that magnetically attaches to the face of the iPad. The cover has three folds which allow it to convert into a stand, which is also held together by magnets. While original iPad owners could purchase a black case that included a similarly folding cover, the Smart Cover is meant to be more minimal, easily detachable, and protects only the screen. Smart Covers have a microfiber bottom that cleans the front of the iPad, and wakes up the iPad when the cover is removed. There are five different colors of both polyurethane and leather, with leather being more expensive than the polyurethane version.