I recently got this powered usb hub from Amazon.com:
https://www.amazon.com/dp/B00DQFGH80/ref=cm_sw_r_awd_rE6Yvb9T20MQ3
And I'm also using this OTG cable to connect the powered usb hub to my nexus 7:
https://www.amazon.com/dp/B005GI2VMG/ref=cm_sw_r_awd_-G6YvbVQFABDN
Which I know works with the nexus 7, so I'm not sure if I just f-ed up and bought the wrong type of powered usb hub, or if there's still hope to make it work with both a wired keyboard and mouse I have. I have connected everything and it seems to just power my mouse, but not recognize it or something? And as for the keyboard, it does not even seem to be powered by the usb hub.
https://www.amazon.com/dp/B00DQFGH80/ref=cm_sw_r_awd_rE6Yvb9T20MQ3
And I'm also using this OTG cable to connect the powered usb hub to my nexus 7:
https://www.amazon.com/dp/B005GI2VMG/ref=cm_sw_r_awd_-G6YvbVQFABDN
Which I know works with the nexus 7, so I'm not sure if I just f-ed up and bought the wrong type of powered usb hub, or if there's still hope to make it work with both a wired keyboard and mouse I have. I have connected everything and it seems to just power my mouse, but not recognize it or something? And as for the keyboard, it does not even seem to be powered by the usb hub.