The PUC (PUK) is a SIM-specific code assigned and provided by the service provider. Once you enter the PUK code, you must set a PIN. The PUK and PUK2 are used to unlock the PIN and PIN2 codes respectively if your SIM card is blocked. 1  GSM USSD codes - Unstructured Supplementary Service Data: list of standard GSM codes for network and SIM related functions. ^  Article on PUK.
The Surface Pro is a first generation 2-in-1 detachable of the Microsoft Surface series, designed and manufactured by Microsoft. The device ran a 64-bit version of Windows 8 Pro operating system with a free upgrade possibility to Windows 8.1 Pro, and eventually also Windows 10.
First announced on June 18, 2012, by former CEO Steve Ballmer at a Los Angeles event in Milk Studios, Surface was the first major initiative by Microsoft to integrate its Windows operating system with its own hardware, and is the first PC designed and distributed solely by Microsoft.