The 4-pin Female USB connector socket is commonly used applicable device in our daily lives. It is used for various devices  like desktop PCs, peripherals, keyboards, mouse, digital electronics, PBXs, Cell phones, Mp3 players, other portable  and hand held devices.

A SanDisk adapter is a PC card you insert into your laptop that lets you transfer data between devices such as phones. The SanDisk adapter lets you insert the phone's memory card to transfer data.

It is basically a  multi-functional USB OTG Hub Adapter Cable. This mini device is usually Compatible with all tablets and cellphones with OTG functions, such as for Samsung Galaxy S3, S4, Tab 3.2, Note 10.1, and many more.

Users who have OTG function on their phone can use micro USB female. This adapter can only be used in OTG Android phones/tablets. This cable provides a convenient and simple smartphone or tablet host replacement of PC to view pictures, listen to music, data transfer from flash drives. Basically, it is compatible with all micro USB connector mobiles and tablets with OTG function.

The J-Link OB (on-board), emulator unit is intended for use with eval boards. It is fully compatible with and same features as regular J-Link, but is an inexpensive solution for complete evaluation kits with debug functionality. JTAG, SWD + SWO is supported Virtual COM Port (K22-Cortex-M, K22-Cortex-A, STM32F072, SAM3U). Compatible with most IDEs with a very small form factor. Feuatures a "Drag-And-Drop" interface for intuitive programming of the target device