Ex-Pro® Micro USB Type B male to 2 x USB Type A Female & 1 x Micro USB Type B Female. Allows 2 OTG devices to be connected to OTG compatible equipment, EG: Table, Smartphone, etc.. With this adapter you can connect 2 compatible devices, such as a Card readers, USB Flash drive, Mouse & Keyboard etc. [Ensure devices are compatible some require power - for example HDD Drive [if the drive is powered externally it will function perfectly.] Adapter also has Micro B USB Female, so you can connect Micro USB into the adapter to provide additional power to your devices (if required) in host mode. With single devices connection adapters this is not possible, this means some HDD drives for example will fail to power. Ex-Pro 1 Year Warranty. Whats in the Box 1x Ex-Pro® Micro USB Type B male to 2 x USB Type A Female & 1 x Micro USB Type B Female. Ex-Pro® Micro USB Type B male to 2 x USB Type A Female & 1 x Micro USB Type B FemaleAllows 2 OTG devices to be connected to OTG compatible equipment, EG: Table, Smartphone, etc..With this adapter you can connect 2 compatible devices, such as a Card readers, USB Flash drive, Mouse & Keyboard etc. [Ensure devices are compatible some require power - for example HDD Drive [if the drive is powered externally it will function perfectly.]Adapter also has Micro B USB Female, so you can connect Micro USB into the adapter to provide additional power to your devices (if required) in host mode. With single devices connection adapters this is not possible, this means some HDD drives for example will fail to power.Ex-Pro 1 Year Warranty