![GL.iNet on Twitter: "@RoganDawes @LucaBongiorni In AR750S, USB1 goes to the external USB-A port. USB2 is connected to an USB hub, which is connected to TF card slow and internal USB pins. GL.iNet on Twitter: "@RoganDawes @LucaBongiorni In AR750S, USB1 goes to the external USB-A port. USB2 is connected to an USB hub, which is connected to TF card slow and internal USB pins.](https://pbs.twimg.com/media/Dm-YHH9XgAA269D.jpg)
GL.iNet on Twitter: "@RoganDawes @LucaBongiorni In AR750S, USB1 goes to the external USB-A port. USB2 is connected to an USB hub, which is connected to TF card slow and internal USB pins.
To what voltage should the D+ line be pulled up when designing USB connection in STM32? +5V or +3.3V? All documentation and dev board scematics says it's 3.3V, but it didn't work.
![Correct pin configuration/hardware setup for USB Host on Tiva Launchpad - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums Correct pin configuration/hardware setup for USB Host on Tiva Launchpad - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums](https://e2e.ti.com/cfs-file.ashx/__key/communityserver-discussions-components-files/908/0825.R_5F00_29.png)
Correct pin configuration/hardware setup for USB Host on Tiva Launchpad - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums
![TPS25830-Q1: DM and DP communicate with host directly without passing through USB switch inside the chip - Interface forum - Interface - TI E2E support forums TPS25830-Q1: DM and DP communicate with host directly without passing through USB switch inside the chip - Interface forum - Interface - TI E2E support forums](https://e2e.ti.com/resized-image/__size/1230x0/__key/communityserver-discussions-components-files/138/4482C.png)
TPS25830-Q1: DM and DP communicate with host directly without passing through USB switch inside the chip - Interface forum - Interface - TI E2E support forums
![signal - Data speed (fps) significantly decreased on USB camera - Electrical Engineering Stack Exchange signal - Data speed (fps) significantly decreased on USB camera - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/mHdTJ.jpg)
signal - Data speed (fps) significantly decreased on USB camera - Electrical Engineering Stack Exchange
![TS3USB221A: Could USB DP signal connect on D- pin - Interface forum - Interface - TI E2E support forums TS3USB221A: Could USB DP signal connect on D- pin - Interface forum - Interface - TI E2E support forums](https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/2543.TS3USB221A.png)
TS3USB221A: Could USB DP signal connect on D- pin - Interface forum - Interface - TI E2E support forums
![Qianli Ipower Pro Power Supply Ipower Test Cable Connector Buckle Terminal Clip For Iphone 6 6p 6s Plus 7 7p 8 Xs Max 11 Pro Max - Hand Tool Sets - AliExpress Qianli Ipower Pro Power Supply Ipower Test Cable Connector Buckle Terminal Clip For Iphone 6 6p 6s Plus 7 7p 8 Xs Max 11 Pro Max - Hand Tool Sets - AliExpress](https://ae01.alicdn.com/kf/HTB1LipoD1OSBuNjy0Fdq6zDnVXam.jpg)
Qianli Ipower Pro Power Supply Ipower Test Cable Connector Buckle Terminal Clip For Iphone 6 6p 6s Plus 7 7p 8 Xs Max 11 Pro Max - Hand Tool Sets - AliExpress
![MP5030C | USB Charging Port Controller with Current Limit Switch, Supporting CDP, DCP, and Quick Charge 3.0 Modes | MPS MP5030C | USB Charging Port Controller with Current Limit Switch, Supporting CDP, DCP, and Quick Charge 3.0 Modes | MPS](https://media.monolithicpower.com/catalog/product/cache/ccb9ba928e4f463ae145b55d0127b66f/m/p/mp5030c_tac.jpg)
MP5030C | USB Charging Port Controller with Current Limit Switch, Supporting CDP, DCP, and Quick Charge 3.0 Modes | MPS
![TPS25810 + HD3SS3212 / Figure 15. Example Implementation - Interface forum - Interface - TI E2E support forums TPS25810 + HD3SS3212 / Figure 15. Example Implementation - Interface forum - Interface - TI E2E support forums](https://e2e.ti.com/resized-image/__size/1230x0/__key/communityserver-discussions-components-files/138/2112.7266.HD3SS3212.png)