How much current can the 2 USB 2.0 ports source at +5v to power hubs and FTDI port adapters?

  • 1
  • Question
  • Updated 1 year ago
  • (Edited)
I didn't find anything in the new USB document or in the Hardware manual.  Are they rated at 500ma or 1A or some other number?  I imagine there's some level of current limiting for protection as well....
Photo of k0eoo

k0eoo

  • 585 Posts
  • 79 Reply Likes

Posted 1 year ago

  • 1
Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

  • 9130 Posts
  • 3454 Reply Likes
Don't rely on the internal power. Use a powered hub for the most reliable operation.
Photo of k0eoo

k0eoo

  • 585 Posts
  • 79 Reply Likes
OK, thanks Tim....
Photo of WX7Y

WX7Y

  • 520 Posts
  • 94 Reply Likes
Thanks Tim and thanks for your comments,
I tried running a FTDI relay board and a FTDI serial cable and the radio would shut down so as Tim said DON'T use it for powering devices. 
There are some nice 12V powered USB Hubs that work great in my station and with the FLEX radio. 
here is what I use.
StarTech 7-Port Industrial USB 3.0 Hub; ESD and Surge Protection part number (ST7300USBME).

73's
Bret
WX7Y
Photo of k3Tim

k3Tim

  • 825 Posts
  • 159 Reply Likes
Thanks that's a nice hub Brent.
Photo of Ria - N2RJ

Ria - N2RJ, Elmer

  • 2252 Posts
  • 874 Reply Likes
I got a 4 port Anker powered hub. Works great. Can be powered via USB from an AC or DC adapter.