The phrase “PC load letter” is a printer error message on some mostly obsolete types of HP laserjet printers. Here, “PC” stands for “paper cassette” and the error indicates that no letter-sized paper is available for a print job with a letter size. The error message is instructing the user to load a letter-sized paper into the printer.
Wi-Fi Protected Access Pre-Shared Key (WPA-PSK) is a security mechanism used to authenticate and validate users on a wireless LAN (WLAN) or Wi-Fi connection. It is a variation of the WPA security protocol.
WPA-PSK is also known as WPA2-PSK or WPA Personal.
WPA-PSK does not require an authentication server and manual user configuration. Thus, it is considered simpler and leaner than WPA Enterprise, a WPA variant.
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