I believe both TL-SG108E and TL-SG105E has the exact same features.

You'll need to separate the switch from your router first since there's a conflict.
Plug in the lan cable straight to your TL-SG105E to your pc.
While connecting straight to the TL-SG105E with your pc, your pc will lose the ability to obtain it's ip address. Because the router leases the local ip to your pc.
You'll need to configure it manually through the video below.

For windows 7.
https://youtu.be/jXGo4hIZWAY?t=170

For windows 10
https://youtu.be/BR1Z0jDauJ4?t=100

Follow the guide above.
Set the ip address to the follow
Ip address:192.168.0.5 or anything not 192.168.0.1.
Subnetmask 255.255.255.0

You don't need anything for gateway and dns.

Now for accessing the switch.
It'll be much more easier if you have the tp-link mini disc that comes with the switch.
Install the content and run the Easy Smart Configuration Utility.
It'll bring up menu to configure the switch where you can immediately change the IP without logging into the switch itself.
like below.










IP address will -> switch IP.
Gateway -> remember to input to your router's IP which is 192.168.0.1


If you lost the cd, you can download from below for the Easy smart configuration utility
http://static.tp-link.com/Easy_Smart_Configuration_V1.0.4.3_Utility.zip

Or else you'll have to try to log into the smart switch by inputting into your web browse the default IP which is 192.168.0.1 (Please make sure your are directly connecting to the switch and it's not connected to the router)
Default IP:192.168.0.1
Username:admin
Password:admin

Once logged in
Select System




Select IP Setting





Input the settings accordingly




Remember save your configuration.




You're done.

thank you for your help i have printed it and will study it keep your fingers crossed;)

have now completed your instruction and the disk did make a big difference ,seems to be working i was very nervous fiddling with the computer but your step by step instructions were great thank you