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.
Microsoft's Dial is coming to the Surface Pro and Book. A firmware update will let the hybrid tablets work like the larger Surface Studio. As part of its event yesterday, Microsoft revealed the wireless Surface Dial, a control wheel that attaches directly to the Surface Studio's screen, letting artists select colors and do other chores.