Wireless Networking
The WLAN processor is an ARM9 from Marvell Semiconductor.
The PSP can connect to a wireless network through Wi-Fi IEEE 802.11b. This allows 2–16 players with PSPs to create a local, ad hoc network for multiplayer gameplay; or to connect to the Internet via an Internet-connected Wi-Fi router. One can also use an ad hoc network to send images from one PSP to another by use of the "send" and "receive" functions that appear in the "PHOTO" menu. By connecting to the Internet, players can compete against other players also connected to the Internet, or browse the web and download files to the Memory Stick via the built-in web browser. Use of wireless network features increases the power consumption and results in a lower battery life.
The non-slim PSP featured a standard IrDA port located on the top left of the device. To date, the only games or applications to use this feature have been homebrew. This can be used to control many TVs as well as other infrared devices. The port is absent from the new PSP Slim redesign, probably due to the lack of any official software that utilised it. Instead, the Wi-Fi switch has moved to the top where the port previously was, so gamers do not accidentally turn Wi-Fi off when browsing the web, playing online, etc.
Currently, only the latest version of PSP, which is the PSP Go is equipped with Bluetooth technology.
Read more about this topic: Play Station Portable Hardware, Technical Specifications