i try with a usb male to usb c adapter but it seems only able to connect to a computer as it requires me to enter a nmber in the computer's browser. is there a way to do this?
Your original post makes no sense to me. You're trying to connect a hard drive to your tablet but it requires you to enter a number on a computers browser?
I don't have a tab S4, but every Android device I've used since 2012 has been plug and play with external storage. All I've ever had to do was grab a micro usb OTG cable and plug my hard drives or flash drives right in and it was recognized.
It's possible the hard drive is formatted in a format Android cannot recognize, NTFS would be one such format. It's also possible the hard drive isn't getting enough power.
I don't think your phone is can provide enough power to the external drives, unless the drives themselves have their own power supply.
Have you tried a usb otg dongle?
https://www.amazon.com/Anker-Adapte...ag=hawk-future-20&ascsubtag=UUacUvbUpU6351086
If not, the program wifi file explorer allows you to transfer files from a computer to your device over wifi. Works really well.
https://play.google.com/store/apps/details?id=com.dooblou.WiFiFileExplorer&hl=en_US
It says "Please follow the instructions below to access the device storage from PC: Enter the above address [ftp://...] in a web browser on PC... " i tried it on 2 external ssd's with usb to usbc conversion cable attached.
I have a powered portable drive with a standard USB connector. If I use a USB to USB-C adapter will I be able to use this drive with my Tab S4? If not what will I need to access the drive via my tablet?
It must draw more than the usb can supply. It may be possible to connect a powered usb hub and then connect your drive to that but at today's prices, it would be better to get a portable drive with a power option and not mess with unpowered.