The TE Connectivity / AMP Brand part number 2199230-4 is a M.2 connector with a 0.5 pitch and 4.2H key E. This connector is gold plated with 15U for added durability and improved signal transmission. It is designed for use in various electronic devices and provides a reliable and high-speed connection for M.2 SSDs, Wi-Fi, Bluetooth, and other wireless communication modules.