Had my Acer spin 713 a month and today noticed a weird issue that I assumed was a fault. Plugged mm mams book reader in Via the USB port.. however the Chromebook wouldn't register it as external drive…then tried a USB mouse and that was fine…tried book reader in another Chromebook and it was fine.
Took it back to Currys and they tried my book reader and agreed it didn't work.. they then said it's possible that the USB is underpowered as they expect everyone to use USB c these days.
Now i was convinced this was me just being fobbed of so I said can I try it in the one that's on display..sure enough..same thing.. reader was not recognised.
So just in case anyone else comes across this issue in the future